Avril Lavigne has debuted a new song online.

The Canadian popster has unleashed the song 'Rock N Roll' as the next cut from her forthcoming new studio album.

It follows previous single 'Here's To Never Growing Up', which hit No.10 in the midweek UK chart update on Wednesday (July 17).

As previously reported, Lavigne recently tied the knot with Nickelback singer Chad Kroeger in a lavish castle ceremony in France.

It's the star's second marriage following her 2006 wedding to Sum 41's Deryck Whibley.

That marriage, however, didn't last too long, with the pop-punkers calling it quits in 2009 with a divorce.