Singer Britney Spears has put her private life on show, boasting about her 'in-bed' sexual skills with her current husband, Kevin, in the first part of the documentary "Britney And Kevin: Chaotic".

The show,begins before the singer met and began dating husband Kevin Federline and documents the early stages of their relationship.

According to reports, the 23-year-old singer shared the details of her love life and her lewd bedroom antics with viewers. She did not seem to hold back anything and also talked about her favourite sexual positions while they were vacationing in a hotel at London.

But when she was asked which way she herself liked it, Britney - a one-time famous virgin - couldn't answer because she was worried about her family seeing the tape.

She giggled, "Mom, just ignore this whole part, and dad too, and Jamie Lynn too. I'm not gonna answer that."

But later, she revealed how she and Kevin enjoyed a saucy stay at a London hotel, just five days after they met during her Onyx Hotel Tour.

In the hotel Britney told dancer Kevin, "Let's not go (out), let's just f**k all day."

And then shared with her assistant Felicia Culotta, "I'm quick. I'm wham, bam, thank-you ma'am."

She then talked about her favourite sexual positions and bragged to her make-up artist "I've had sex three times today".

The show also looked back at a lonely Britney before she met Kevin.

She said, "I've been married, but that was a different story... Love is like the biggest mystery to me."