These trainers are said to be the most expensive in the world.

The gold and diamond-encrusted sports shoes are adorned with hundreds of sapphires - and they even have a tag made from solid gold.

The one-of-a-kind trainers were the brainchild of luxury brand Bicion and designer Dan Gamache.

But to own them would set you back a cool $4 million (£2.7 million).

The shoes will be auctioned off in New York with all proceeds going to charity Soles4Souls.

The US-based charity collects new and used shoes and gives them to people in need.