Because National Sister’s Day is this week, we thought we’d celebrate those famous siblings whose close relationships make us want to be their sisters! Sure, they may argue and fight, but when it comes down to it, these celebrity sisters always have a girlfriend to rely on:

Kim, Kourtney & Khloe Kardashian

Since 2007, America has watched Kim, Kourtney and Khloe Kardashian fight, cry, laugh, love and grow into businesswomen on E!’s “Keeping Up With The Kardashians.”  This trio of sisters loves to pick on each other, while never letting go of how much they truly care. The girls are there for each other through thick and thin, from marriage to divorce to children.  The three have gone into business together, starting a series of fashion boutiques called Dash and starting a clothing line called the Kardashian Kollection.

2.   Tia & Tamera Mowry

Tia and Tamera Mowry have embraced sisterhood to the next level! We watched Tia and Tamera grow up together, making the awkward transition from children to young women throughout their six seasons on “Sister, Sister.” After establishing an identity as twin TV stars, the duo decided to break away from one another. Though Tia starred without her sister for several seasons on the hit series “The Game,” she and her sister were never far apart. Since 2011, they’ve also had their own reality series on the Style Network called “Tia & Tamera.”  Tia Mowry-Hardrict and her husband Cory Hardrict welcomed their first child that same year, while Tamera got married this May.

Jessica & Ashlee Simpson

Jessica and Ashlee Simpson are two Texas teens who came to Hollywood to make it big.  Both have had ups and downs but seem to be growing into their own as they mature.  Jessica transitioned from singing into acting before launching her fashion empire of clothing, shoes and accessories in 2010.  She has two children (Maxwell and Ace) with boyfriend former football player Eric Johnson.  Ashlee, a former ballerina, toured with her sister for three years as a dancer before her own music career took off with 2004’s “Autobiography.”  In 2008, she has a baby boy, Bronx, with then-husband Pete Wentz. In a show of sisterly love, Ashlee recently posed for the cameras for the fall campaign of Jessica’s clothing line.

4.   Venus & Serena Williams 

Venus and Serena Williams are two powerhouse sisters that you do not want to mess with.  Both of these world-class athletes, only one year apart, learned to play tennis from their father and turned pro at 14 years old.  These tennis stars have earned three Olympic gold medals together as doubles partners.  Venus has been an active member in a number of social causes, including work with UNESCO on promoting gender equality throughout the world, while The Serena Williams Foundation provides assistance to underprivileged youth through counseling, care, housing, food and education.  The two currently live together in Palm Beach with their two dogs and starred in a documentary called "Venus and Serena" this year.

5.   Zooey & Emily Deschanel

Zooey and Emily Deschanel are two sisters who have carved their own paths in Hollywood. Emily is best known as Dr. Temperance Brennan on FOX’s long-running hit “Bones and is a producer for the show since the third season. She is also the mother of a son, Henry, with husband David Hornsby (“It’s Always Sunny in Philadelphia”). Zooey, meanwhile, built her career playing a number of quirky roles in independent films and “Elf” before transitioning to TV with “New Girl” in 2011. She is also a talented singer who makes up one-half of She & Him and co-founded Hello Giggles, a website for women and young girls. Though they haven’t appeared together much on-screen, Zooey did guest star on “Bones” as the cousin of Dr. Brennan. 

Who did we leave off our list? Make sure to let us know in the comments below!

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