Frankie, who is expecting a baby boy in October with fiance Wayne Bridge, made her way to the BBC Radio 1 studios in London and it's fair to say she looked blooming marvellous!
The mum-to-be showed off her bump in a flowing black maxi dress and added a splash of colour with a green scarf draped around her neck.
She greeted cheering fans outside before making her way to the studios to help promote The Saturdays' new single 'Disco Love', which they premiered this morning.
Earlier this month, Frankie, 24, announced that she was pulling out of any forthcoming gigs on her doctor's orders, as she had been advised not to perform until after her baby is born. But that hasn't stopped her from being with her fave girls completely!
While Frankie walked her bump through the crowds, band mates Rochelle Humes and Una Healy also brought their children along to the radio appearance!
It appeared to be 'bring your child to work day' as Rochelle strolled her daughter Alala-May into the offices while keeping the pram covered with a blanket.
Rochelle, 24, beamed and looked sophisticated in a blue v-neck jumper teamed with tailored navy blue floral trousers. Very chic! Her glossy hair, which was loosely tousled, was kept to one side.
Meanwhile, Una flashed loads of leg in a leather mini skirt while holding onto the hand of her adorable daughter Aoife Belle. Aoife walked along with her mummy in a cute floral dress and white sandals.
Band mates Mollie King and Vanessa White also upped the style stakes with their outfits. While Mollie rocked a tartan-inspired dress with a brown belt on the waist, Vanessa looked hot-to-trot in a monochrome skirt and matching jacket.
Frankie watched her bandmates perform without her on TV during this weekend's Virgin Media's V Festival. After their performance at Hylands Park, Essex, on Sunday (18 August), she tweeted: "@TheSaturdays looking hot today! Bet it was a Gooden!"
Listen to 'Disco Love' below: