JT's grandma confirms engagement

Justin Timberlake's grandma has confirmed her grandson's engagement to Jessica Biel.

The 'Cry Me a River' star's relative said she wasn't allowed to say anything until after Christmas.

Speaking to Gossip Cop, Justin's grandmother Sadie Bomar said: "He called me on Christmas Day and told me he's engaged."

She added that she had been told not so share the news "until after the holidays" and that Justin's family think Jessica is "a very sweet girl".

US gossip magazines first reported that Justin had popped the question to Jessica while on vacation in late December. However, representatives for both stars have yet to comment on the alleged engagement.

Justin and Jessica have been together since 2007, despite a brief split last year.