Britney SpearsIt's the debate that has got America talking - what name will Britney Spears give her baby daughter?

But while the Beckhams have gone for such weird and wonderful options as Romeo and Cruz, the Toxic Girl is being tipped to choose a rather plainer moniker.

Indeed, the hot favourite being touted around is plain old Lynn, after her mum.

Fans have been laying bets across America with a whole range of weird and wonderful names.

But more and more have been bypassing the stranger options - and the odds for Lynn have been dramatically slashed after a rush of bets. Britney's sister is called Jamie Lynn Spears.

Baby naming expert Sue Moss told the New York Daily News: "Lynn is definitely up there. She's so close to her mother that I would expect that to feature - maybe she'd use it as a middle name."

American author Joe Borgenicht agrees. "She's got to think about how the name's going to fit in with the rest of the family. Britney, Kevin and Asparagus doesn't work. Britney, Kevin and Steve does."

But some across the Pond are still hopeful Britney will go all showbiz on us.

Linda Murray, of Babycenter.com, said: "Vegas is a definite possibility. But she may choose a Hebrew name, as she's into Kabbalah - maybe Miriam, which means rebellious.

"I also think she might combine her name with her husband's and come up with Keviney or Kittney."

The press widely reported Britney was having a girl after an apparent slip-up by her publicist, but this has since been denounced as a lie, meaning the field's still wide open.