Robbie Williams and wife, Ayda Field, attend the launch of the Spencer Hart flagship store on September 16, 2011 in London, England Credit: Eamonn McCormack/

Robbie Williams better brush up on his lullabies.

The 38-year-old former Take That singer is set to become a first-time dad, he confirmed on his personal Website Friday.

"I've been keeping a secret from you all…Me and Ayda are going to be Mummy and Daddy this year!" he blogged, referring to his pregnant wife, actress Ayda Field. "We had sex! It works!"

Already hard at work planning his little one's nursery, Williams couldn't help but gush about impending fatherhood.

"We've seen scans and cried. Looked at babies in commercials and teared up….Basically I'm in love with a little person growing in mummy's belly," Williams blogged.

Field and Williams tied the knot in August 2010.