Serena Williams flaunts famous butt in tight white skirt to support Drake at restaurant opening

Serena Williams flaunts famous derriere in skintight white skirt and a matching crop top while heading out to support rumored beau Drake at the grand opening of his new eatery Fring's in Toronto on Monday September 21.

The 34-year-old tennis ace was seen escorted by a male companion and Drake, 28, introduced Williams to his mother Sandi Graham that night.

''In the cut with my one and only,'' the Toronto-born rapper captured a photo of cuddling his mom in a DJ booth, who wore a jeans with a camouflage shirt and khaki jacket for his big night.