The Beckham clan were spotted at the Bellagio hotel in Las Vegas on Monday as they celebrated Romeo’s 22nd birthday.
Victoria looked sensational in a black strapless jumpsuit, teamed with heels and a shoulder bag.
The fashion designer, 50, waved to onlookers while her husband David, 49, and their kids followed behind her.
David was seen leaving the venue with his arm around daughter Harper, 13, after watching Bruno Mars perform.
Romeo, who turned 22 on Thursday, looked typically stylish in an all-black ensemble, while Cruz stepped out in a shirt and baggy trousers.
It comes after it was reported that Romeo has left his Premier League football club to focus on a career in fashion.
According to The Sun, the midfielder, who is the son of David and Victoria Beckham, was offered a new contract by Brentford FC in June to stay on with their B team.
But it appears Romeo is hoping to follow in his mother Victoria’s footsteps as he signed with top Paris fashion agency Safe Management.
Romeo is no stranger to the world of fashion, having starred in a Burberry campaign when he was just two years old and he is regularly seen showing off his style sense at A-list events.