Jamie Cullum and Sophie Dahl haven't let their height difference get in the way of love

Jamie Cullum and Sophie Dahl are to tie the knot, his spokesman tells Now Online.

The 6ft model and the jazz singer have been dating for two years.

Jamie, 29, and Sophie, 31, were seen telling friends about the engagement at a Gucci party in London last week.

Sophie is the granddaughter of the late children's author Roald Dahl.