Justin Bieber is proud to be a sex symbol

Los Angeles  - Justin Bieber is happy to be considered a sex symbol.

The 20-year-old singer admits modelling for Calvin Klein has always been his dream and he hopes his adverts become iconic like Mark Wahlberg's in the '90s.

He said: ''I don't know if I'm a sex symbol or what that even means. But if I am one, fine by me!''

The Baby singer landed a contract modelling underwear for the brand after posting a picture of himself on Instagram of himself in his boxer shorts last March.

##?

A photo posted by Justin Bieber (@justinbieber) on Mar 25, 2014 at 10:49am PDT

He added to Us Weekly magazine: ''Modelling for Calvin Klein was always my dream. And it got their attention.''

The singer worked out five times a week with his personal trainer to prepare for the photoshoot and even lifted weights during it, and he hopes Mark is a fan of his work.

He said:''I hope he reacts positively to my ads.''

Just spoke to my boy @mark_wahlberg. Honored to be a part of the legacy. @CalvinKlein #mycalvins

— Justin Bieber (@justinbieber) January 7, 2015

Meanwhile, the Canadian star, who is rumoured to be dating Hailey Baldwin following his split from long-term girlfriend Selena Gomez last year, insists he is enjoying being single.

He said: ''Single life is great. It's given me time to focus on myself.''