The 'What About Us' singer's bandmates are delighted that her soccer player beau Wayne Bridge popped the question after two-and-a-half years, and quickly took to Twitter to share their excitement.
The pregnant star enthused: ''Big congratulations to @FrankieTheSats and Wayney. He did so well :-) and the ring is to die for in the flesh. Welcome to the wifey club xxx (sic)''
Una Healy - who married rugby player Ben Foden last year - chimed in: ''So Happy for @FrankieTheSats and Wayne who have recently got engaged X''
The band's youngest member, Vanessa White, added: ''Congrats @FrankieTheSats & Wayne! So happy for you guys. Woooooo xxx''
However, the band's only single member, Mollie King, is yet to publicly express her well wishes, despite being particularly close to the 24-year-old star.
Frankie made the news of her engagement public earlier today (08.04.13) by sharing a cute snapshot of the pair showing off her silver sparkler.
She told MailOnline: ''Wayne proposed to me on Saturday evening and I said yes. We are both very happy.''