Frankie Sandford of The Saturdays is engaged to her footballer love Wayne Bridge, 32.
The brunette, 24, teased fans on Twitter writing, "Guess what?!!!!" and linking to an image which showed Frankie jokingly gasping in shock, a diamond sparkler adorning her finger.
Brighton and Hove Albion footballer Wayne is also in the snap and is seen kissing his lady on the cheek. The couple have been together since December 2010.
Frankie's band mates – Una Healy, Vanessa White, Rochelle Humes and Mollie King were clearly delighted for the star, who will soon join Una and Rochelle as the third married member of the group.
Una Healy, who on Monday was unveiled as HELLO! Online's star blogger, was the first to send her congratulations, saying "So Happy for @FrankieTheSats and Wayne who have recently got engaged X."
Rochelle also wrote on the micro blogging site."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," she said while Vanessa added, "Congrats @FrankieTheSats & Wayne! So happy for you guys."
It's not yet known when fans will be treated to another Saturdays wedding.
Frankie's huge diamond ring is the latest gift from her generous fiancé. Wayne presented his girlfriend with a £135,000 Aston Martin when she celebrated her birthday last year.
The former Chelsea player has moved on following his split with French model Vanessa Perroncel, with whom he has a son, Jaydon Jean Claude.
Frankie and Wayne have made time for romance amid the singer's heavy work load. The sportsman helped his girlfriend celebrate when The Saturdays bagged their first ever number one single as What About Us went straight to the top of the charts.
They were separated last year while Frankie filmed reality show Chasing the Saturdays in Los Angeles and New York. When they were briefly reunited during Wayne's visit, Frankie shared a picture titled "cozy bbq times." The cute snap showed the pair cuddling up on the sofa.