Justin Timberlake performed at Hollywood Boulevard last night, for the Jimmy Kimmel Live! outdoor concert.

Before performing his hit single Cry Me A River, based on his relationship with Britney Spears, Justin ranted about women and how ‘crazy’ they are.

‘Women are crazy’, he told the crowd. “Like f**king crazy. Sometimes you gotta let ‘em know.”

He then upped the tempo by moving into Rock Your Body; saying “Enough of the emo R&B.”

Although Justin did a six-song set he wasn’t feeling his best asking fans to help him out by singing along.

'I'm gonna need your help tonight. If I'mma do this, I need to hear everyone singing,' he said. 'I don't want to see you big-time me. I know this is Hollywood. F**k all that.'

Justin then sent fans into a frenzy by playing his new single TKO.

"Y'all been listening to the radio? Y'all been streaming that album? Can I play something new?" he asked the crowd. "Y'all gonna go buckwild if I play this?!?"

The Mirrors singer has been travelling all over the world promoting his new album, The 20/20 Experience 2 of 2. As part of the promotion for new movie Runner Runner, he has been gracing red carpets worldwide.

Justin's album The 20/20 Experience 

The singer is also eager to show off his Spanish skills as he is set to play music mogul Neil Bogart in a new movie.

"I can barely speak English but I do have a pretty good ear, so I'm good at mimicking things that are told to me in Spanish,' the 32-year old laughed.

"If it was an all-Spanish-speaking movie I feel it would be my responsibility to learn the language, but, as it turned out, I play a guy from Princeton who has to learn a little Spanish. I know a little bit from travelling."