Selena Gomez Is the Best Maid of Honor as She Surprises Cousin With ‘Dream’ Wedding Dress

The former Disney star also got playful while posing with the bridal party on Instagram.

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!