Britney Spears has stunned her army of fans by dropping a huge hint that she is expecting a baby.

The pop diva said she couldn't wait to become a mum in a bombshell letter dedicated to her own mother.

She says: "I relate to her so well because she's a young mom. A lot of people think you should wait until you're older before you have kids.

"I've had a career since I was 16, have travelled the world and back and even kissed Madonna!

"The only thing I haven't done so far is experience the closest thing to God and that's have a baby. I can't wait!

"To be a really good mom, I feel your child needs to be your full-time job. I want to raise my kids and share all of those precious moments with them and not rely on nannies."

The letter is written on her official fan club site.

She also says in the letter: "Cooking is kind of like motherhood. To be really good at it, you don't need instructions. You just go on instinct and what feels right."

Britney, 22, wed dancer Kevin Federline in Los Angeles this year after months of rumours in the media.