The mum-to-be highlighted her blooming bump with a flowing black fitted dress as she joined her Saturdays band mates Una Healy, Mollie King and Vanessa White for a night of celebration on Tuesday (4 June).
Frankie, who is expecting her first child with footballer fiancé Wayne Bridge, swapped her trademark cropped hair for hair extensions on Monday and, we have to say, we're loving her glam new look
The Saturdays were spotted leaving their London hotel on Tuesday before attending the Glamour Women of the Year Awards at Berkeley Square Gardens, where they picked up the Best Band gong.
A thrilled Frankie later tweeted: "Thanks so much for everyone that voted!!! Amazing! Such a good night
The Saturdays were without fifth member Rochelle Humes, who is on maternity leave following the birth of her first child, Alaia-Mai, in May.
It was a double night of celebration of Mollie, who not only walked home with a prize, but was also celebrating her 26th birthday!
Lucky Mollie even got a birthday serenade at the event from the famous crowd, which included huge stars like Victoria Beckham and Kylie Minogue!
Mollie said: "I can't believe the whole room sang Happy Birthday to me on stage! Wahhhh! I'm so starstruck right now… I can't believe we've won Best Band for the 2nd time! Just incredible! And the perfect birthday pressie!"
Congratulations girls! (And happy birthday, Mollie!)
> Mollie King is pretty in bargain Topshop printed cami and skirt - pictures
> Rochelle and Marvin Humes: first night out since baby's birth!