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Zach Galifianakis hit the “Hangover III” premiere in LA last night with a very special lady friend – an 87-year-old formerly homeless woman named Elizabeth “Mimi” Haist.

According to Star magazine, Galifianakis befriended Haist in 1994 when she worked at his local laundromat, Fox Coin Laundry, in Santa Monica. Two years ago, the comedian found out that Haist was homeless, so he bought her a one-bedroom, one bathroom apartment.

Galifianakis has paid the rent and utilities for the home for the last two years and reportedly enlisted actress Renee Zellweger to help decorate the space. A source told Star that Zellweger, “furnished the apartment and makes sure that Mimi always has food in her fridge.”

Haist has been the actor’s plus-one to several Hollywood parties, which she says are fun. Check out a video of Mimi from 2010.