Selena Gomez takes her maid of honor duties very seriously!
The 25-year-old singer (and her back-to-brunette tresses) headed to her home state of Texas this week for her cousin Priscilla DeLeon's bridal shower -- where it's clear she was the life of the party.
Gomez appeared to join the bridal party for a dress fitting, where she surprised DeLeon with her dream wedding gown.
"When your maid of honor makes your dream dress a reality and surprises you with it!" DeLeon captioned a sweet video of herself and Gomez posing with a sign reading, "I said yes to the dress."
The former Disney star also posed with the group for a Boomerang, in which DeLeon and her bridesmaids all rose a glass to cheers the occasion -- while Gomez knocked back the bottle!