Fabulous at 40!

Victoria Beckham celebrated her milestone birthday Thursday by spending time with her husband David Beckham and their four children -- Brooklyn, 14, Romeo, 11, Cruz, 8, and Harper, 2 -- at the Grand Canyon.

She shared a series of snapshots on Twitter and Instagram, including one where she was cozying up to her shirtless hubby.

"Having a wonderful day with my family x vb," the former Spice Girl tweeted along with the sexy photo. In the pic, she's laying next to her other half, sporting a red-and-white striped bikini and a black Adidas hat.

The brunette beauty also posted a pic of herself gazing at the incredible view, writing, "Magical day hiking the Grand Canyon with my babies x vb."

The fashion mogul recently opened up about her husband. 

"[He] is the most wonderful man I have ever met. He's a fantastic father," she said in Allure's March issue. "He's incredibly talented, a wonderful husband. I supported him for many years, and he's proud of me. He supports me. We're very equal at home."

The Beckhams are definitely in it for the long haul!

Victoria may have nixed a Spice Girls reunion, but she'll always be Posh Spice to us! Click "Launch Gallery" above to see even more of your favorite pop stars then and now.

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