In the pic, taken at The Saturdays star's hen do in Ibiza last week, the sisters can be seen smiling for the camera.
They both appear to be holding wine glasses and Frankie is wearing a 'Ciroc' wristband - the name of one of the party island's most exclusive nightspots.
Frankie, 25, is busy preparing for her wedding to footballer Wayne Bridge this summer.
The pair welcomed their baby boy, Parker, to the world in October last year.
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