Talk about an All-American hottie!

Lauren Bush-Lauren, the niece of former President George W. Bush, stripped down while vacationing with her hunky hubby in Jamaica over the weekend, revealing her fabulously fit bikini body, and RadarOnline.com has the sexy shot.

Bush and her husband of several months, David Lauren, were joined by Paul McCartney and his wife Nancy, and David’s father, fashion designer Ralph Lauren, on their luxe tropical vacation.

The founder of the charitable organization FEED took her husband's name, making her Lauren Bush-Lauren.