Glam! Jen Aniston, Reese Witherspoon, Katherine Heigl Rock ELLE Event

The who's who of Hollywood actresses stepped out for ELLE's 18th Annual Women in Hollywood bash in Beverly Hills Monday night, dressed to the nines in their most stunning evening wear.

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On the red carpet at the Four Seasons Hotel, Reese Witherspoon and Jennifer Aniston embraced in a hug, rising star Elizabeth Olsen beamed at being the night's youngest honoree, and Us Weekly got the scoop on who's crushing on who when it comes to wardrobes.

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"My favorite is Rachel Bilson — I literally read her column in InStyle every month," Katherine Heigl told Us. "Do what that girl says! She looks fantastic all the time."

"I just saw Elisabeth Olsen walking and and she looked pretty spectacular in Calvin Klein. Obviously having sisters who are amazing fashion designers can't hurt," said Community actress Gillian Jacobs.

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"Nicole Richie always looks flawless and effortlessly stunning," said Busy Philipps. "I guess that's why she has her own very successful lines of clothing."

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