The five-month-old looked like she was in the Christmas spirit in the festive number which she wore with beige trousers and little booties.
Mum Victoria took a turn carrying her daughter, wearing grey skinny jeans, a black cardigan and giant six-inch stiletto-heeled boots by Christian Louboutin.
The couple were at their son Romeo's football game in Santa Monica, California.
The whole family were out in force at the soccer game.
Brooklyn doted on his little sister, trying to get a smile from the baby.Booty ... Victoria Beckham in huge heelsX17online
And the former Spice Girl rested her hand on Cruz's shoulder as she watched her son play in the match.
Last month fashion designer Victoria broke down in tears THREE times ? as she won a top fashion gong.
Posh, 37, beat Stella McCartney, Burberry and former Gucci and YSL director Tom Ford to land Designer Brand Of The Year at the British Fashion Awards.
She sobbed: "I'm so sorry for crying. This is really rubbish of me.
"I am so nervous, this means so much to me."
The mum of four paid tribute to her soccer ace hubby, saying: "Without David I wouldn't have had the courage to do what I'm doing."