Katy Perry becomes the face of Thomas Sabo

Katy Perry is the new face of Thomas Sabo jewellery.

The 'Firework' hitmaker has been named as an ambassador for the firm and will feature in the company's spring/summer advertising campaign for their forthcoming Pop Now collection - which is influenced by elements including pop art, music, disco and neon.

As part of the deal, Thomas Sabo will sponsor Katy's concerts, while she will only wear their jewellery and make an appearance at trade show Inhorgenta in Munich.

The German company said in a statement: "With this, Thomas Sabo is once more underlining its international position as leading lifestyle brand for sterling silver jewellery."

Katy is the first ever 'face' of the company in their 27-year history.

In addition, Thomas Sabo have announced they will use a male model for the first time ever as they push their male collection further.

They have also teamed up again with racing driver Nico Rosberg to promote the brand.

Katy has previously spoken of her love of quirky jewellery but one of her most treasured pieces was given to her by now-husband Russell Brand on their first date.

When quizzed about her long necklace, she said recently: "Russell gave this to me on our first date. It's a Hindu hand of peace. But they're not beads, they are black diamonds. He gave me black diamonds on our very first date."