Una Foden and husband Ben expecting second baby: 'We're all very happy'

The Duke and Duchess of Cambridge weren't the only ones with baby news to share on Monday – Una Foden has revealed that she and husband Ben Foden are also expecting their second child. The Saturdays star, 32, took to Instagram to announce her pregnancy. She shared a sweet snap of the couple's daughter Aoife Belle holding her hands above her head and wearing a T-shirt which read, "I'm going to be a big sister."

© Photo: Instagram

Writing alongside, Una told fans, "I know lots of people have been guessing and Ben and I can no confirm that

!!!

."Una and rugby player Ben, 29,

, and were married in the singer's native Ireland in June that same year.

© Photo: Getty Images

The new arrival will be the fourth Saturdays baby –

and her husband Marvin welcomed their daughter in May 2013, while

star

became a mummy to son

in October.Earlier this year, Una spoke about her dreams of expanding her family. "I would love to have more kids further down the line," she told the

. "I very much enjoy being a mum."