In an interview with a UK magazine, the 31-year-old has spoken about the effect that motherhood has had on her life since she and rugby player husband Ben Foden welcomed baby Aoife Belle 12 months ago.
'I'm a mother now and everything I do is for her'
She explained: ''It's so much better than before. She gives me a massive reason to live. I'm a mother now and everything I do is for her - your priorities change so much. Watching a creation that me and Ben made together grow is lovely.”
The star also spoke of enjoying the sense of community that being a mother has brought, she said: “I love the bond you have with other mothers. You walk into a lift and there'll be another baby there and you start conversation with other mums.''
[ASSETHERE=image]
When asked about the effect pregnancy and motherhood has had on her body, Una admitted she didn’t have to work hard to lose weight after the birth of her daughter.
She said: ''I didn't put on a lot because I was very fit and healthy throughout my pregnancy. I was dancing on tour at six months pregnant. I put on two stone and lost most of it by the time I got home.”
''For the first few weeks you don't step outside the house because you're drained. It's constant at the beginning and I lost a lot rapidly without dieting, just from being tired and busy.”
But the super slim Saturday dismissed critics who claim she is too thin, saying: ''Sometimes people might say, you could do with putting on a few pounds, but I'm not dieting. This is me. I've always been slim since I was a swimmer as a child.''