Their mother may be one of the world's highest earning pop stars, but it doesn't take much to entertain Sean Preston and Jayden James.

The pair like nothing more than dressing as their hero Spider-Man, both insisting on wearing their miniature outfits while out with their family yesterday.

Jayden had obviously been picking up some tips on acting like a superhero.

The three-year-old attempted to throw webs over the photographers as they walked by.

Doting mother: Britney Spears carries Jayden as they go to see Percy Jackson & The Olympians: The Lightning Thief in Los Angeles

The family were on a trip to the cinema, where Jayden and Sean, four, watched Christopher Columbus-directed Percy Jackson & The Olympians: The Lightning Thief with their mother and grandmother, Lynne.

It seems the boys may be following in their mother's footsteps.

Britney, 28, is an equally big fan of dressing up, although in her case the costumes are seen on stage as part of her dance routines.

Mini Spider-Man: Jayden James shoots an imaginary web at photographers

It certainly pays off. Last year's Circus world tour made Britney £25million, helping her become the fifth highest earning artist.

Just last week, she played with her image once again, visiting the salon to get hair dyed blonde.

She had only tried out her new brunette look in December.

Family outing: Britney's mother Lynne carried her oldest son Sean Preston

Meanwhile Jayden and Sean's father Kevin Federline is appearing on U.S. TV show Celebrity Fit Club, after ballooning to 17stone after quitting dancing.

The 31-year-old's ex-girlfriend Shar Jackson, who was pregnant with his second child when he dumped her to date Britney, is also on the show.

She became tearful in this week's episode after watching a video message for Federline from his new love, Victoria Prince.

Shar then admitted she has not been on a date since he walked out on her.