Excited Robbie Williams tweets picture of pregnant wife Ayda Field - The Sun

The Take That star, 38, posted the cute snap of pregnant Ayda Field lifting her top up to reveal her protruding belly on his blog.

He wrote: "My two girls!"

The 32-year-old actress grinned broadly while standing in what appears to be the couple's living room.

She's due to give birth in two months.

Robbie announced the couple were expecting a baby in March.

He wrote on his blog: "Hey friendlies, I've been keeping a secret from you all. Me and Ayda are going to be a Mummy and Daddy this year!!!!!!

"We had sex! It works!"

He continued: "We've seen scans and cried...looking at babies in commercials and teared up...the nursery is already planned.

"Basically I'm in love with a little person growing in mummy's belly...and can't wait to be a daddy. Crying now.

"Much love, much joy. Roberto, Mum and Little Bump. xxx"

Swiftly afterwards he revealed the little one is a girl.

It was recently claimed that the parents-to-be are contemplating naming their daughter Roberta, after Ayda's famous father.

Robbie and Ayda married in August 2010, two years after they met.