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3 November 2011, 14:11
Una tweets picture of Mollie and co working on their abs.
The Saturdays are preparing for their upcoming UK tour by hitting the gym.
Una Healy posted a picture of her bandmates working on their abs on Twitter today (3rd November) – but she managed to skip the routine because of her pregnancy.
After showing her followers a photo of Mollie, Rochelle and Frankie toning their abdominals, Una wrote: "Go on girls.... "Work Work" those abs!! Lol."
And in another message, the 'On Your Radar' singer revealed why she wasn't joining in with the exercise routine.
"My baby gave me an almighty kick for the first time today that it made me jump! That's my ab workout for the day! :)," Una wrote.
Frankie has rejoined the group this week following almost two months away and revealed on her own Twitter page earlire that she's impressed by the size of Una's baby bump.
The Saturdays kick off their 'All Fired Up!' UK tour in December. Their new album 'On Your Radar' is released on the 21st November.
Look at a photo of The Saturdays at the gym below.