Justin Timberlake helps man propose at Louisville concert

Justin Timberlake helped a man propose to his girlfriend during his concert in Louisville last night (December 15). The 'Mirrors' singer invited Josh and Kim to join him on stage after he performed 20/20 Experience track 'That Girl' at the city's KFC Yum! Center.

"Josh called me earlier, he's got something he wants to tell you," Timberlake said, before Josh got down on one knee to propose to Kim.

She accepted his proposal, to the delight of the 22,000-strong crowd. Timberlake is currently taking his '20/20 Experience World Tour' around North America, before heading to the UK and Europe in 2014.

Jessica Biel recently said that she and Timberlake would like to have children "at some point".