New parents Britney Spears and Kevin Federline have taken to wearing photographs of each other as babies around their necks.

The couple's odd behaviour was exposed when the cute pictures were assumed to be of their new three-month-old son Sean Preston.

But the pair insist it is just another way of expressing their intense love for each other.

Spears' representative LESLIE SLOANE says, "That photo Kevin is wearing around his neck is actually a photo of Britney as a baby."