Check out Britney!

One week she’s snapped on the beach in a skimpy bikini baring all and the next, she looks like she’s on the way to a parent-teacher meeting.

Dressed in a modest, knee-length polka-dot dress and flat shoes, the singer, 26, looks every inch the sensible mum as she steps out in Las Vegas.

Shock horror, the mum-of-two may even be wearing knickers.

But don’t worry – if you thought the raunchy star was going all serious on us, fear not.

Just hours later she was back in her bikini as she chilled out by her hotel pool – once again flashing photographers as she re-arranged herself in full public view.

Check out this week’s Reveal, where Britney tells how her dad saved her life and why she owes her comeback to her dad.