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Cameron Diaz, Drew Barrymore & Lucy Liu

Nothing comes between these three Charlie's Angels costars—in fact, Diaz was just spotted at BFF Barrymore's final wedding dress fitting. And from the trio's matching pointy footwear to Lucy and Cam's kooky hats, everything about these outfits says "Independent Women." Click through to shop their looks.

Beyoncé & Gwyneth Paltrow

Star friendships don't come much better-looking than this stratospherically successful duo. Bey and Gwynnie have been close for years, and frequently step out together in complementary embellished couture. Click through to shop their looks.

Salma Hayek & Penelope Cruz

In addition to both being talented actresses and bombshell moms, Salma and Penelope have been friends for ages. Here are the two in coordinating shades of blue. Click through to shop their looks.

Demi Lovato & Selena Gomez

These Disney sweethearts have been known to hit many a red carpet arm-in-arm. And even when Demi publicly struggled with depression and an eating disorder, Selena still loved her like, well, a love song. Click through to shop their looks.

Courteney Cox & Jennifer Aniston

Friends on and offscreen, these sitcom sweethearts both favor minimalist color palettes and clean-lines. Here, they're doing their best "Ebony and Ivory" routine. Click through to shop their looks.

Katie Holmes & Victoria Beckham

They've got killer style sense, design chops and mega-famous husbands. It's little wonder, really, that Katie and Posh are pals. Click through to shop their looks.

Nicole Kidman & Naomi Watts

These stunning actresses clearly have far more in common than just their perfect alabaster complexions. Click through to shop their looks.

Amy Poehler & Tina Fey

Smart and funny and pretty much the best role models for little girls ever, these Saturday Night Live alums are still great friends. Here they are at the 2008 CFDA Fashion Awards. Click through to shop their looks.

Michelle Williams & Busy Phillips

If you're on a red carpet and happen to spy Michelle Williams, chances are her BFF Busy isn't far behind. Pals since their Dawson's Creek days, we love how supportive these blonde beauties have always been of each other. Click through to shop their looks.