Sofia Richie, the younger daughter of singer Lionel Richie makes her modeling debut at 15.

Sofia Richie, the younger daughter of singer Lionel Richie makes her modeling debut at 15.

Sofia Ritchie, the little sis of reality star and fashion plate Nicole Richie, has kicked off her own professional modeling career at 15, with a provocative bikini photo spread for Mary Grace Swim, a Southern California bathing suit company.

Richie is following in the footsteps of BFFs Kendall Jenner and Kylie Jenner, who also started modeling skimpy bikinis at the tender age of 15.

Kendall is now 18 and a growing presence in fashion because of her stunning looks and graceful five-foot, 10-inch height. Sofia is barely five-feet tall, but has sexy unique look, and like Nicole, a celebrity pedigree.

Her father is Grammy- and Oscar-winning singer Lionel Richie. Unlike Nicole, who is adopted, Sofia is Richie’s by birth with his ex-wife Diane Alexander. The married in 1995 and divorced in 2004.

Sofia Richie Debuts as Swimsuit Model
(Click Photos to Enlarge!

Growing up rich and famous has opened doors for Sofia, although she is already charting her own course. She wants to follow her sister into fashion and her father into music.

She’s a bit underage to be modeling professionally–the industry likes models to be at least 16– but she’s no stranger to fashion shoots. Last year, at 14, she was featured in Teen Vogue. The Vogue spread could be considered her coming out party.

She learned all about fashion brands from diving into her sister’s closet and Nicole’s legendary 200-pair collection of sunglasses. “I love Christian Louboutin [shoes],” she told the magazine, “but I can’t walk in them yet.”

Sofia has already built a 200,000-strong following on Instagram.

When she’s ready to launch her music career, she not only has her dad to guide her, but also her brother-in-law. “Joel [Madden] is always like, ‘Let me produce your first record!'” she said about the Good Charlotte front man.

“He takes me to the studio for voice lessons, and we write together. He’s really cool. He’s one of my best friends,” she added.

“When I’m older, if I’m successful at everything, I want to come out with a clothing line,” she added.

Check out her Mary Grace Swim photos, let us know your thoughts and follow TheImproper on Twitter for the latest fashion trends.