Justin Timberlake can't wait for his son to see 'Trolls'.

The 35-year-old actor voices Branch in the upcoming Dreamworks animated adventure and is hopeful 15-month-old Silas - who he has with wife Jessica Biel - will be interested in watching the movie when it comes out later this year.

He said: ''It's great timing and I hope he's going to like it.

''By the time the film comes out in the autumn he should be interested and able to enjoy it.

''Watching these kinds of movies with him is one of the things I'm looking forward to as a dad.''

The 'Can't Stop the Feeling!' singer admits fatherhood has changed him completely.

He told Britain's HELLO! magazine: ''Having my son made me want to just enjoy that experience and not really think about anything else. You look at everything differently.''

And Justin has found having Silas has made him a more affectionate person.

He said: ''To tell you the truth, before I became a father I wasn't really into hugging - but now I excel at hugs.''

Justin took a break from music after Silas was born but he's excited to now be back in the studio and working on a new album.

He said: ''It's exciting. Working on the music for 'Trolls' put me back in the spirit where I wanted to get back into the studio and start working on a new album.

''I can't tell you exactly what it's going to be like. Working on an album is a process - you know it's done when it's done.''