Supermodel Jennifer Hawkins has helped TODAY host Karl Stefanovic get ready for summer by bronzing him up with a spray tan.

The former Miss Universe dropped by the show this morning to offer the benefit of her years of experience at the hands of the world's top beauticians.

Karl prepares for his new look with Jennifer and Lisa Wilkinson.

The new-look Karl strikes a pose. (9NEWS)

The robe is dropped and the spray is ready.

Stefanovic recently posted a photo of his "attractive white" legs on Instagram, which he said drew some good-natured mockery from Hawkins and designer Alex Perry.

The Instagram photo that started it all. (Instagram)

"The lovely Jen has come in today to help me get my tan on in time for spring," Stefanovic said.

Hawkins used her own line of spray-tan products to set Stefanovic's skin glowing.

After a "few extra coats", Stefanovic emerged looking browner than ever before.

"My self-esteem feels better already," he said.

Lisa confirms that yes, Karl really does need a tan. (9NEWS)