By DAILY MAIL REPORTER
Keep your eyes front young man: Justin Bieber manages to avert his eyes from Rihanna's figure under her sheer Yves Saint Laurent dress backstage at the Grammy Awards last night
As a girl-crazy pubescent teenager, Justin Bieber could have been forgiven for gawping at Rihanna's risque dress at the Grammy Awards.
But as the R&B stars posed up for a photo backstage, the 16-year-old Canadian made sure he kept his gaze away from the Bajan singer's assets.
No stranger to flashing her body, Rihanna's sheer white ruffled Jean Paul Gaultier mermaid gown left little to the imagination.
Making an entrance: Rihanna showed off all angles of her dress on the red carpet
The transparent gown was just one of three ensembles Rihanna, 22, sported at a Los Angeles ceremony.
Despite fighting off a bout of bronchitis, Rihanna not only attended, but performed two tracks on stage with rappers Eminem and Drake.
Her duet of Love The Way You Lie with Eminem ended up turning the airwaves blue when U.S. TV network CBS failed to censor the rapper saying the F-word.
Red hot: Rihanna later changed into a sparkly leotard for a raunchy duet of What's My Name? with Canadian rapper Drake
The broadcaster also caught Lady Gaga saying 'Holy s**t' when she accepted an award.
It marked an emotional night for the star. Two years ago she was forced to pull out of a Grammys performance after being assaulted on the eve of the ceremony by her then-boyfriend Chris Brown.
Aside from performing, Rihanna picked up Best Dance Recording for Only Girl In The World, but missed out on Best Rap/Sung Collaboration and Best Rap Song for Love The Way You Lie to her mentor Jay-Z and Alicia Keys duet Empire State Of Mind.
Bieber was nominated for Best New Artist and Best Pop Vocal Album for My World 2.0, but missed out in both categories to Esperanza Spalding and Lady Gaga respectively.
Writing on his Twitter page afterwards: 'Tonight was a great night. I got to perform at the Grammys with my mentor Usher Raymond IV and I feel like we did you guys proud.
Double trouble: Rihanna - wearing Christian Dior - and Eminem performed Love The Way You Lie - which was up for two Grammys - but lost out in both categories to Jay-Z and Alicia Keys' Empire State Of Mind
'As for the awards... of course I wanted to win. It's been and still is a dream to win a Grammy. Was I upset...? yes. But I was happy for her also someone said to me tonight it's not your successes that define u but your failures. I lost... but I don't plan on this being my last chance....
'I do this because I love it..and I do it for my family friends and fans who support me. I was grateful for the honour and this is just the beginning.'
The teen heartthrob's fans, known as Beliebers, were not as understanding and took to Spalding's Wikipedia page to vent their anger over the unknown artist taking away the prize.
'Justin Bieber deserved it.. go die in a hole. Who the heck are you anyway?', was the sentiment of one of his fans. These messages have now been taken down.
Esperanza is also now receiving death threats, joining Kim Kardashian and Selena Gomez who received them for getting too close to their idol.
But Justin was a perfect gentleman back stage and hugged the Esperanza and said he will try again for the Grammys next year.
Step aside Justin: Bieber duetted with Will Smith's son Jaden
Justin Bieber Hugs It Out With Spalding [Grammys]! 14/02/11
Justin Bieber and Usher Grammy performance 2011
Eminem ft Rihanna Love the way you lie 2 / Dr dre I need a doctor Performance Grammy Awards 2011
source: dailymail [endtext]