Ashlee Simpson, Evan Ross and Jagger Ross - Lead
Credit: Dan Steinberg/Invision for Talent Resources/AP Images

Ashlee Simpson, her husband Evan Ross, and their daughter Jagger Snow had the cutest family outing: The threesome attended Operation Smile's Mommy & Me event at the Kia Malibu Beach House in Malibu, California, on Friday, just a day before little Jagger's first birthday.

With Ross beside her, Simpson, 31, posed for photos while holding the adorable birthday girl in her arms. The singer looked beautiful in a purple, floral-print maxidress and her long blonde hair in loose, beachy waves. Ross, 27, opted for a simple yet stylish white T-shirt, skinny jeans, and a black cowboy hat.

The couple celebrated their daughter's first birthday by presenting her with a giant box of cupcakes at the event. Luckily there were plenty more hungry kids more than happy to help the little one polish them off.

On Sunday Ross took to Instagram to reflect on their mini-me's first year of life. "Yesterday was our baby JAGGER SNOW's birthday!!!!!," he captioned a photo of himself, Jagger and Simpson smiling for the camera. "I cant believe [it's] been a Year!!! My heart is filled with so much love. So thankful for these two people next to me."

Happy birthday, Jagger!