Who: Glamazons, Girls Aloud.
What: Wowing the audience at the 100th Royal Variety Performance in matching sequinned black fishtail gowns, featuring gold brocade detailing on the front.
All the girls opted for old-school Hollywood hair, with big polished tumbling curls, and glamorous red lips for their performance of The Promise.
The ladies sang one of their first live performances since reuniting again, and joined One Direction, Katherine Jenkins and Amanda Holden at the show.
Where: The Royal Albert Hall, 19 November.
Verdict? The Girls have got it going on 10 years down the track.
See all the glamorous pics from this year's Royal Variety Performance here: