Justin Timberlake proved his devotion to girlfriend Jessica Biel recently by buying her £40,000 worth of jewellery.

The SexyBack singer is reported to have bought Jessica a pair of diamond Montblanc earrings and Chanel J12 watch for Monday's Costume Institute Gala in New York.

Justin and Jessica appeared together at the biggest event in the fashion calendar.

A source told the Daily Mirror: “Justin splashed out on the bling to show his devotion."

You can see the couple at Monday's event on Entertainmentwise below:

Costume Institute Gala