One Last Time Ariana Grande
The girls join forces for a new gangster film about travellers.
The movie, called Big Fat Gipsy Gangster, stars Rochelle from The Saturdays opposite N-Dubz and X Factor star Tulisa.
Tulisa plays Shanikwa and Rochelle plays her mate Jodie, and the pair feature in some singing scenes together while shacked up in a caravan.
Rochelle and Tulisa's acting collaboration in the gangster film is due out on DVD this September.