Stephen Baldwin's daughter Hailey Baldwin was the maid of honor at her sister Alaia's wedding on Saturday (2Sept17).

The 20-year-old rising star shared in the joy of her only sibling's big day, in which she married boyfriend Andrew Aronow in New York. Hailey wore an elegant black gown and stood alongside her cousin Ireland, daughter of Alec Baldwin, who served as a bridesmaid as well.

In Instagram photos posted by attendees of the event, Alaia, 24, can be seen wearing a white ruffled gown with a long flowing veil.

Ireland took to the photo sharing site to post a sweet image of herself with Hailey, and Stephen's wife Kennya Baldwin.