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Lily Aldrin (Alyson Hannigan)

Alyson HanniganSeth GreenCarter BaysMorena BaccarinCraig ThomasAlexis Denisof
How we met Lily: This former goth and kindergarten teacher got engaged to Marshall in the first episode. She prided herself on her overpriced designer duds and meddling in Ted's romantic dealings. She also struggled with defining her life beyond her relationship with Marshall. She ran off a few... Cliff Lipson / CBS