Pop star Robbie Williams and his wife Ayda Field are expecting their second child.

The former Take That singer took to Twitter.com on Monday (28Apr14) to share the exciting news with his fans.

He wrote, "Ayda and I are delighted to announce that Theodora Rose Williams is going to be a big sister."

Williams and Field wed in 2010 and little Theodora Rose was born in September, 2012.