Bella Hadid turned 21 yesterday.
But the stunning model has found out that growing older doesn't necessarily mean you get wiser.
Stepping out in Paris recently, the sister of supermodel Gigi had an unfortunate wardrobe malfunction, giving onlookers a flash of her assets.
Her cheeky sideboob slip-up was as part of an interesting look the leggy brunette was sporting, that included a leather beret teamed with cycling shorts.
It's not the first time the face of Dior Beauty has endured a public nip slip.
The model, who is a fan of a plunging neckline, was pictured giving paps a glimpse of her beauties at Burberry's London Fashion Week earlier this year.
She also regularly frees the nipple out of choice, wearing sheer gowns and going braless at a number of events.
Well, if you've got it, flaunt it.