But it seems Una is about to get even busier, as she has revealed that she is already planning on having a second child.
"I would love to have more kids further down the line. I very much enjoy being a mum.”
Una isn’t the only mum in The Saturdays as her, Frankie Sandford and Rochelle Humes also have little tots of their own. But says their little ones makes the band's dynamic even more fun.
"They're like the fun aunts. They're great. We're all like a family really."