The Saturdays singer and her fellow bandmates dressed to impress as some of their favourite Disney characters last night (29 March) - and partied hard until the early hours!
Although Mollie King was missing while she fulfilled bridesmaid duties in Newcastle, Rochelle, Frankie Sandford, Una Foden and Vanessa White all took to social media to show off their outfits and pictures of their fun night.
Frankie and fiancé Wayne Bridges chose Angelica and The Mad Hatter and absolutely nailed it! Both were barely recognisable from their usual selves when they arrived at the party venue, Steam And Rye.
Meanwhile, Una and her delicious husband Ben dressed as Ariel from The Little Mermaid, and Tarzan. We love the wig, Ben!
Vanessa rocked an Esmeralda costume, while One Direction's Niall Horan looked dashing as Prince Charming.
Missing Mollie, who was choosing bridesmaid dresses, sent a message to her bandmate, saying: "Have a fab night @rochellethesats! I literally cannot WAIT to see all the photos, so sorry I can't be there. Sure it'll be one to remember."
After a night of partying, pop star Rochelle shared a tipsy message with her Twitter fans.
She said: "I haven't had a night like this since long before I was a mum, tomorrow will be interesting gahhh.
"I'm getting home at 5.45 am. Thank gawd it's Mother's Day! Daddy can do the morning feed."
We hope the head's not too sore this morning, Rochelle!
Do you think The Saturdays nailed fancy dress chic? Tell us below!