Caleb Followill & Lily Aldridge: Birthday Celebration with Family!

Caleb Followill and his wife Lily Aldridge depart LAX Airport with their adorable baby Dixie on Friday (August 31) in Los Angeles.

The 30-year-old Kings of Leon rocker and his 26-year-old supermodel wife were in town to celebrate the 21st birthday of Lily‘s sister Ruby.

PHOTOS: Check out the latest pics of Lily Aldridge

Last weekend, Ruby‘s dinner celebration was held at the exclusive Chateau Marmont, with Garrett Hedlund, Caleb‘s brother Jared, and his fiancee Martha Patterson also in attendance.

Lily tweeted a picture and said, “Happy birthday Ruby!” Check out the picture of Lily and Ruby below!

FYI: Caleb & Lily are using their Graco car seat!