Jennifer Lopez and Geri Halliwell
News to us! It turns out that the Spice Girl wore Lopez's iconic Versace dress one month before the singer sported the look at the 2000 Grammys.
Nicole Richie and Rihanna
The Fashion Star mentor and pop superstar show off matching bra tops in their equally fit bodies.
Jennifer Aniston and Rachel Bilson
It's business in the front and party in the back for these two stars in their Christian Dior looks.
Cher and Ashanti
The two performers certainly aren't singing the blues in their black-and-white Balmain suit.
Britney Spears and Beyoncé
It's a battle of the pop divas as the two singers show off their impressive figures in blue dresses.
Kat Graham and Miley Cyrus
The stars add their own personal twist to a little black dress from Versace.
Kate Upton and Olivia Wilde
Twinsies alert! Both model and actress rock their feminine side in this Louis Vuitton Spring 2012 daisy-patterned dress.
Mindy Kaling and Amanda Peet
The stars stepped out in mod-inspired mini dresses by Saint Laurent.
Jennifer Garner and Jenna Dewan-Tatum
Sporting the luxe Stella McCartney handbag, the actresses looked casual yet fashionable.
Kat Von D and Kristen Stewart
The tattoo artist and Twilight actress both made a fashion statement in Derek Lam's body-hugging dress.
Katy Perry and Jenna Elfman
Both stylish stars looked trendy in Rodarte's colorful coat featuring a cozy shearling collar.
Lady Gaga and Olivia Wilde
Looking fabulously fierce, the stars rocked Christian Louboutin spiked heels.
Miley Cyrus and Rihanna
The stylish songbirds were spotted wearing identical Dita Magnifique cat-eye sunglasses.
Jennifer Lopez and Lena Dunham
Both stars looked ladylike and feminine in two variations of the vibrant Valentino ensemble.
Kristen Stewart and Rosie Huntington-Whiteley
Jason Wu's leather-and-lace combo outfit looked stunning on both beauties.
Rumer Willis, Krysten Ritter and Zendaya Coleman
The young stars looked fun and flirty in the Alice + Olivia Bergen dress.
Miranda Kerr and Abigail Spencer
The lovely ladies made a striking statement in Balenciaga's snake jacquard pencil skirt.
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