Ashlee Simpson: Evan Ross' 25th Birthday Celebration!

Ashlee Simpson and boyfriend Evan Ross pose together while celebrating his 25th birthday at the Revolve Beach House on Saturday (August 24) in Malibu, Calif.

The 28-year-old entertainer was joined at the bash by her father Joe Simpson, who was seen giving a thumbs up.

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Evan was all smiles while posing with an artistic self portrait of himself at the birthday celebration.

Guests were treated to a southern themed meal including chicken and waffles, grits, potato salad and watermelon. Yummy!

The day before, Ashlee and Evan were spotted dropping off her son Bronx at his grandma Tina‘s house in Toluca Lake.