United Kingdom, May 20 -- Tony Hadley is about to become a "cheeky" grandad.

The Spandau Ballet legend is "over the moon" that his 39-year-old daughter Toni is due to give birth this month, and he already knows he'll be a "childlike" presence in the tot's life.

Tony, 64, wrote in his Woman's Weekly magazine column: "I'm excited to say that I'm about to become a grandad!

"My daughter Toni is expecting in May - it's looking like it'll be a boy - and I'm over the moon."

The 'Gold' hitmaker has five children - Tom, 41, Toni, 39, Mackenzie, 34, with his ex-wife Leonie Lawson, and Zara, 18, and Genevieve, 13, with his current spouse Alison Evers.

And Tony cannot wait for the new addition to his family because he can "continue being childli...