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Frankie, Mollie, Rochelle and Vanessa are congratulating Una Healy as she's the first of The Saturdays to announce she's expecting a baby.
Una, who has been dating her rugby boyfriend Ben Foden for the last two years, flew home to Ireland this week to share the news that she's pregnant with friends and family.
"I'm really happy," Una revealed.
"It was totally unexpected but me and Ben are really excited."
Una's man is currently in New Zealand playing for England in the rugby World Cup, but the pair are reportedly planning to celebrate together when he comes home.
Meanwhile mum-to-be Una's 'All Fired Up' bandmates are thrilled with the news.
"We're so excited for Una," the Daily Mirror reports the other Saturdays' girls saying.
"We can't wait to have a sixth Saturday. Ben and Una are going to be fab parents."
The Saturdays kick off their UK tour later this year where fans can hope to get a glimpse of a baby bump, and their latest single 'All Fired Up' is out to download now.