It can be hard to keep up with all of the award shows in Hollywood, so we were pleasantly surprised to find out about the AFI Life Achievement Award Tribute to Shirley MacClaine last night.

For those of you who also had no idea this was going on, the American Film Institute awards actors whose careers "contributed to the enrichment of American culture." Past recipients include Elizabeth Taylor and Meryl Streep, so it's no wonder A-listers pulled out all the stops in the fashion department.

Stars went completely glam for Shirley, channeling Old Hollywood in floor-length gowns, glitter and taffeta. It's not everyday that we see Jennifer Aniston, Dakota Fanning and Mena Suvari in a room together, but they all seemed to have gotten the same memo -- dress to impress.

Evan Suvari's tattoo-baring, cream-colored gown was particularly refined. And, unsurprisingly, Jen looked amazing in a simple white Burberry ensemble. Check out what the rest of the stars wore in the slideshow below.

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  • Jennifer Aniston in Burberry

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  • Jennifer Aniston in Burberry

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  • Dakota Fanning in Gucci

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  • Dakota Fanning

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  • Mena Suvari

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  • Mena Suvari

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  • Mena Suvari

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  • Mena Suvari

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  • Katherine Heigl in Monique Lhuillier

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  • Katherine Heigl in Monique Lhuillier

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  • Katherine Heigl

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  • Meryl Streep in Valentino & Shirley MacLaine

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  • Shirley MacLaine

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  • Melanie Griffith

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  • Marcia Gay Harden

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  • Lea Thompson

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  • Elizabeth McGovern

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  • Wendi Deng Murdoch

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  • Toni Collette

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  • Jennifer Aniston

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  • Jennifer Aniston

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  • Meryl Streep

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  • Shirley MacLaine, Carrie Fisher & Meryl Streep

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  • Shirley MacLaine & Julia Roberts

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  • Julia Roberts

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  • Melanie Griffith, Jennifer Aniston & Meryl Streep

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  • Jennifer Aniston & Melanie Griffith

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  • Sally Field & Meryl Streep

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