Aoki Lee Simmons, 21, reveals that 'despite the age disparity' she is dating Serafina co-founder Vittorio Assaf, 65, who is the same age as her father 'I liked him from the first moment we met'

Aoki Lee Simmons, 21, enjoyed frolicking in the sand with her rumored boyfriend Vittorio Assaf, 65 during a recent vacation in the Caribbean. 

The BCBG model, who is the daughter of music mogul Russell Simmons, 66, and designer Kimora Lee Simmons, 48, showcased her lithe form in a multi-colored string bikini in shades of orange, green and red, with a matching bandeau top.

She appeared makeup-free and wore her long dark hair in natural curls around her shoulders. 

The cover model accessorized with a thin gold chain around her neck. 

Meanwhile, the restaurateur, who is 44 years her senior, sported a pair of blue and white swim trunks.  

Aoki Lee Simmons, 21, shared a kiss with her boyfriend Vittorio Assaf, 65 while on vacation in the Caribbean April 2

He accessorized with long chunky white gold chain. His salt and pepper hair was combed back from his face. 

It's unclear how long the two have been dating. 

A source close to the model told People, 'Aoki and Vittorio are spending time together and enjoying each others' company.' 

The Serafina restaurant chain co-founder seemed to enjoy using his phone to snap pictures of his lady love, documenting their romantic trip on the island of St. Barts, which is reportedly a favorite destination for the Simmons family.

The celebrity hideaway is a favorite of luminaries such as Paul McCartney and Paris Hilton who recently enjoyed trips there. 

The tiny French-speaking island is located east of Puerto Rico and the Virgin Islands.

The tiny island boasts only nine square miles of area, but it's home to 22 white-sand beaches and the pair enjoyed taking a dip in the sapphire blue and turquoise waters.

The couple seemed to be trying to keep their relationship quiet.

It's unclear how long the two have been dating. A source close to the model told People , 'Aoki and Vittorio are spending time together and enjoying each others' company'

The BCBG model showcased her lithe form in a multi-colored string bikini in shakes of orange, green and red, with a matching bandeau top. The restaurateur sported a pair of blue and white swim trunks

The Serafina restaurant chain co-founder seemed to enjoy using his phone to snap pictures of his lady love, documenting their romantic trip on the island of St. Barts

The runway beauty seemed to enjoy splashing in the warm waters as the waves rolled toward the shore. The St. Barts visitors guide reports April to June is the best time to visit and December to March is the peak of tourist season

The pair enjoyed a swim in the turquoise waters