Sofia Richie’s 21 Sexiest Photos Exposed For 21st Birthday

Scott Disick has been romancing much younger girlfriend Sofia Richie for more than two years, but now she’s oficially becoming an adult.

The model turns 21 this Saturday, August 24, and her Keeping Up with the Kardashians lover, 36, is sure to be planning a big birthday party.

Beautiful blonde Sofia’s appeal to Kourtney Kardashian‘s ex is obvious!

Singer Lionel Richie‘s daughter has been modeling for years and knows how to show off all her sexy assets.

As Scott’s galpal, she’s become a paparazzi favorite and she also constantly posts photos of her body on Instagram.

Sofia is known for wearing thong bikinis, tank tops, tight pants, cropped shirts, and other body-baring clothes in photo shoots and on vacations with her main man.

On their latest getaway, to Italy, Scott’s girlfriend left little to the imagination, oozing sex appeal in a string…