Canadian rapper Drake was reportedly floored when he saw photos of Rihanna at the annual Council of Fashion Designers of America (CFDA) Awards held at Alice Tully Hall at Lincoln Center on 2 June in New York City.

The 26-year-old Barbadian beauty, who was honoured with the Fashion Icon Award at the event, made a bold statement in a sheer backless halter dress, custom-made by designer Adam Selman.

The backless risqué outfit comprised of a total of 216,000 Swarovski crystals and the singer wore a flesh coloured thong, and went without a bra, exposing her breasts.

"He can see how some people are turned on by it and how others can be turned off," a source told Hollywood Life. "It's fashion and glam, he guesses. Personally, he's not surprised that his ex would wear something like that. She loves to shock people but with that ensemble, she made them gag," the source added.

Rihanna see through dress

"He's old school and would prefer his woman to only reveal her naked body to him and him alone," the insider added. "That's just how he is but he thinks if it's liberating for Rihanna to personally show her birthday suit to the world, and if she's happy doing it, then more power to her."

Drake has been in an on-again-off-again relationship with Rihanna for the past few months. The pair had dated briefly in 2009 following her very public split from Chris Brown.