A Trusted Friend in a Complicated World

What Are Sister Signs in Astrology—and How Do You Find Yours?

Updated: Jul. 10, 2024

Looking for that storybook-romance kind of love or a truly amazing friendship? Pairing up with your astrological sister sign could be the key.

Zodiac Sister Sign
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The power of sister signs

Romantic comedies would love you to believe that opposites attract, but what does astrology have to say about that? There are several ways to measure the zodiac compatibility of two people in love and friendship. Chances are, you’ve checked your horoscope to see if you’re a perfect match with someone. But even if you know all about star signs, rising signs and moon signs, you might be missing something if you haven’t considered sister signs.

Finding your sister sign is a smart way to use your zodiac sign to be happier. As a professional astrologer who has been comparing client birth charts for the better part of the past five years, I have seen time and again how this polarizing energy can actually draw people closer together. If sister signs were a trope in a romance novel, they would be enemies to lovers to soulmates—an energetic match that challenges you to push beyond your comfort zone to find true happiness in every aspect of your life. Take it from me: When it comes to zodiac signs, sister-sign synastry is where the real magic happens.

Ahead, I’ll explain what a sister sign is and how to find yours. It just might be what your romantic relationships and friendships have been missing.

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Zodiac Sister Sign Infographic
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What is a sister sign, exactly?

A sister sign is the zodiac sign that sits opposite yours on the astrological wheel. Each pair of sister signs is positioned 180 degrees away from one another, or six signs apart, in opposition. These pairs share a complementary zodiac element (water and earth; fire and air), which causes the initial attraction. However, they also share the same zodiac polarity (cardinal, fixed, mutable), which can lead to frustration between the signs.

What are the six sister signs in astrology?

The six pairs of sister signs are:

  • Aries and Libra
  • Taurus and Scorpio
  • Gemini and Sagittarius
  • Cancer and Capricorn
  • Leo and Aquarius
  • Virgo and Pisces

Because sister signs face off against each other, they tend to share similar views and perspectives on life but go about achieving their goals differently. For example, Cancer and Capricorn are known for caring for others and providing comfort. However, Cancer focuses on a person’s emotional and spiritual needs, while Capricorn is more hands-on and solutions-oriented.

Are sister signs a good match?

They definitely can be, but if you plan to date someone with your opposite sign, be ready to compromise. The two signs in any pair have a strong attraction to each other, and their shared axis in astrology means each one has something the other needs. You will challenge each other and frustrate each other occasionally, but the passion between sister signs fuels your love. But ultimately, a cooperative relationship can elevate both of you, leading to a strong, lasting bond.

The friendship between sister signs is about as natural as it comes. It’s not uncommon to find a group of friends who all share sister-sign pairings. When you befriend your sister sign, get ready for plenty of laughs, adventures and deep conversations. These are the people who truly appreciate and understand you. It can almost feel like you’ve found your long-lost twin or even as if you knew this person in a past life. Sister signs are built to challenge and bring out the best in you. Your opposite sign will always look out for your best interests and isn’t afraid to tell it like it is when you need it. Scroll down to see how this might play out in your own life.

Zodiac Sister Sign Aries Libra
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Aries and Libra: The ambitious power couple

People born under these signs are natural-born leaders who aren’t afraid to chase their dreams, but their motivations aren’t the same. They are also both very concerned with how people perceive them, though they use different skills to get ahead. Aries impresses others through bold achievements and ambition, while Libra takes a more restrained approach, often using their social connections and relationships to accomplish their goals. Libra’s touch is seen as softer and more restrained, whereas Aries’s communication style is more direct, honest and often blunt.

Power struggles can arise between these signs because of their different approaches to success. However, if they can unite to support each other’s career aspirations and goals, nothing can stand in the way of these two building an empire. This power couple knows how to command attention anytime they enter a room, and they’re always on the cutting edge of what’s trendy and fashionable.

Zodiac Sister Sign Taurus Scorpio
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Taurus and Scorpio: The deep and intense pair

Taurus and Scorpio are both known for their depth and intensity in relationships. The energy between these two signs is all about desire and power, which they seek in different ways. Taurus is focused on personal achievement and values, driven by a deep desire to carve out a secure and cozy life for themselves. They feel secure when they have financial stability and tangible markers of success. In contrast, Scorpio seeks power through social means and positions of authority. They use their soft skills and quiet influence to move the chess pieces around the board in their favor, feeling most powerful when they have influence and respect from others.

Taurus and Scorpio might be the two most stubborn signs of the zodiac, so finding common ground can take time. As fixed signs, neither is likely to budge first. However, when Taurus and Scorpio come together successfully and their lives are moving in the same direction, they form a romantic or deeply intimate relationship that feels unshakable. As these two get more comfortable with each other, Taurus will help Scorpio feel secure enough to share their feelings, and Scorpio will help Taurus open up and learn to trust people.

Zodiac Sister Sign Gemini Sagittarius
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Gemini and Sagittarius: The free-thinking duo

Gemini and Sagittarius might be the most similar sister-sign pairing of the bunch. As mutable signs, they are free-thinking, open-minded and intelligent, fueled by their shared love of the unknown. Geminis are highly curious and never afraid to ask questions and dig deeper. They like to challenge the status quo and encourage others to think more critically about the world around them. Similarly, Sagittarius is driven by a passion for learning and knowledge. They see life as the greatest teacher and aren’t afraid to start over and evolve into a new version of themselves.

Neither of these signs likes to stay put in one place for too long, so they’re naturally drawn to each other. They’re happy to keep things casual and see where life takes them without much expectation. However, their love of freedom is one reason these two have trouble committing. It takes perfect timing, a deep connection and serious conversations for Sagittarius and Gemini to agree to settle down together. But if they can pull it off, it is almost guaranteed that love will quickly become their greatest adventure.

Zodiac Sister Sign Cancer Capricorn
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Cancer and Capricorn: The pillars of commitment

Cancer and Capricorn represent the axis of commitment and devotion. As cardinal signs, they share strong convictions and a desire to make their mark on the world. Both are dutiful and committed to taking charge of whatever life throws at them. Cancer is one of the zodiac’s most intuitive and psychic signs, relying on their heart to guide them in life. Their motivations and decisions come from a deep knowledge of themselves and the people around them. On the other hand, Capricorns like to cling to the tangible. They use logic and reason to solve problems and make decisions. If Cancer seeks to provide for others by offering emotional security and empathy, Capricorn provides security by bringing order and structure. Both signs could learn a lot from each other.

A successful relationship between Cancer and Capricorn is built on deep trust and mutual respect. Both of these signs understand the work and sacrifice it takes to build a lasting legacy, but they deal with stress in different ways. Earthy Capricorn tends to be less emotional and more logically driven, while Cancer is famous for being sensitive and moody. This disconnect can be a sticking point in relationships. Still, if both partners can learn to be vulnerable, these two can build a lasting relationship that is both emotionally and financially enriching.

Zodiac Sister Sign Leo Aquarius
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Leo and Aquarius: The showstopping stars

Though they might seem completely incompatible at first, Leo and Aquarius complement each other incredibly well. Both signs are known for their confident and self-assured attitudes and can work together to challenge the status quo. Leo refuses to live a life outside the spotlight. People born under this sign crave authenticity and thrive on making deep, heartfelt connections with others: They can’t help but be themselves, and they want the rest of the world to shine brightly along with them! Aquarians also pride themselves on their uniqueness, but they can feel stuck in their head, thinking nobody will ever understand them. These signs benefit from expanding their social circle and shamelessly wearing their hearts on their sleeves.

As the bombastic showstopper of the zodiac, Leo has a feisty and fiery energy that is hard to ignore. Lions draw attention wherever they go and always seek to live their lives through creative and personal expression. On the other hand, Aquarians have a reputation for being a bit more introverted and selective with who gets their attention. They don’t play games in love and are usually very direct about how they feel. Aquarius may initially be intimidated by Leo or feel like they’re doing too much. Still, Leo’s warm and bright personality knows how to coax Aquarius out from under their shell and help show the world their truly unique talents.

Zodiac Sister Sign Virgo Pisces
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Virgo and Pisces: The balanced daydreamers

As mutable signs, Virgo and Pisces are flexible in how they approach life. Think of Virgo and Pisces as the connection between the physical world and the dream realm, respectively. These signs know how to tap into their intuition easily, but their insights come from different places. Virgo is all about living in the here and now. They meticulously plan their lives and ensure they use their skills to maximize their efforts and outcomes. Their inner perfectionist ensures they always come out on top. On the flip side, Pisces are drawn more to the spiritual and metaphysical side of life, often escaping to their fantasy world when they need to rest and recharge.

Virgos and Pisces make a terrific match in love if they can get on the same wavelength. They each know how to approach difficult conversations and challenges while being open-minded about their partner’s perspective. They’re both givers in a relationship and will go above and beyond to get the details right for their partner. The real trick is getting them to admit their feelings for each other. Neither is likely to make the first move, but if you can encourage each half of this pair to say what’s on their mind and stand firm in what they want, a beautiful relationship will blossom between them. If you’re a part of this pairing, you might want to check out the best compliments for each zodiac sign to help you along.