Jessica Simpson and John Mayer have sparked rumours that they are dating after being spotted together in Los Angeles on Saturday night.

Earlier this year Simpson fired her publicist over reports that she was dating the singer, but the celebrity couple may indeed be an item after allegedly spending time together at top night spots in the States.

According the E! News the pair were seen in Beverly Hills at the Sunset Marquis and the Four Seasons hotels.

The report suggests that Jessica Simpson was resting her head on Mayer's chest.