Ali is one of Sophie's friends and bridesmaids for her wedding in the first movie.
Mamma Mia:[]
Ali shows up to the island for the wedding along with Lisa, where Sophie tells the two girls about her mom's diary, and how she secretly invited her mother's three ex-boyfriends to the wedding, hoping to discover which one of the three is her biological father. Before the wedding, she and Lisa spend the day with Eddie, on his boat, and the three return to see Tanya be courted by Pepper. The two girls also and serve as bridesmaids for the wedding.