Frankie has been barred from further performances until her baby's birth on doctor's orders which means she'll miss The Sats' main stage slots at Hylands Park and Weston Park this weekend.
But earlier today band mate Una made sure Frankie would know she was missed, tweeting at her: "We will miss you loads this weekend :( x."
Frankie replied: "Me too! Missing you guys."
The show must go on for the other girls however, and they've been rehearsing hard ahead of their sure-to-be-must-see performances.
We've already seen Mollie King showing off her gymnastics skills in a rehearsal video, and today we saw Vanessa White doing some serious twerking for the camera.
Doing a handstand against the wall, Vanessa shows off her best moves – and gets a pat on the bum from a giggling Rochelle Humes.
Gymnastics, twerking – if they bring that to the stage it sounds like their V set will be unmissable!
Details and full lineup for Virgin Media's V Festival, taking place 17 and 18 August in Weston Park, Staffordshire and Hylands Park, Chelmsford, are available here.
Frankie Sandford's pregnancy in pictures:
Copyright: Twitter The Saturdays
Watch the music video for 'Gentleman' below: