The Saturdays will be the special guests on the So You Think You Can Dance results show this weekend.
It will be the first live TV performance of the girl group's next single 'Notorious', which is released on May 22.
Meanwhile, a source has revealed to DS that two major US female popstars are being lined up for performance slots on the semi-final and final in June.
This weekend's SYTYCD will feature routines choreographed by Strictly Come Dancing pros Artem Chigvintsev and Kristina Rihanoff and Cheryl Cole's 'Fight For This Love' mastermind Beth Honan.
All the final five couples will dance two routines on Saturday, with genres ranging from charleston and disco to salsa and hip-hop.
So You Think You Can Dance continues tomorrow evening at 5.35pm on BBC One.
> John Barrowman steps in for Lythgoe on 'SYTYCD'
