Tina Fey didn't know she worked with 'Mean Girls' star on '30 Rock'

Tina Fey says that casting Gretchen Wieners in the new 'Mean Girls' movie musical was a tough task – and she ended up choosing an actress she'd worked with on '30 Rock' without realizing it.

Tina Fey didn't know she worked with 'Mean Girls' star on '30 Rock'

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Tina Fey didn't know she worked with 'Mean Girls' star on '30 Rock'

Girls5eva 30 Rock: Tina Fey's universe is outgrowing her past.

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All about Tina Fey's famous husband and family as she reveals her daughters helped with new Mean Girls movie

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Tina Fey's Instagram, Twitter & Facebook on IDCrawl