BRITNEY SPEARS' publicist has denied she is dating her minder, after the pair was photographed enjoying a sunshine vacation together.

The superstar singer and a muscle-bound security guard, known only as LEE, were spotted last week frolicking on a Mexico beach - prompting rumours of a romance.

But her representative Larry Rudolph says: "There is no truth to this at all."

And Rudolph insists the Toxic hitmaker is not dating anyone at the moment.

"She is 100 per cent single," he said.