Rochelle Wiseman is hoping for a "tacky" hen party.
The Saturdays singer - who will marry JLS hunk Marvin Humes later this summer - will celebrate her last days as a single woman this weekend but has no idea what her friends have planned.
She said: "I've got my hen coming up this weekend. I don't know [what we're doing], I don't want to know! I have asked for something really tacky so I'm sure they'll deliver!"
Although she is excited about the bash, Rochelle admitted she is "frightened" that her pals - including bandmates Frankie Sandford, Vanessa White, Mollie King and Una Healy - could go too far.
She said: "I'm terrified of what the girls are planning for my hen do.
"They won't tell me anything. But God knows what they have in mind. I'm frightened."
However, Rochelle isn't worried about pictures emerging from the celebrations - because she doesn't think they could be more embarrassing than Marvin's stag party antics, as the JLS hunk was handcuffed to a dwarf and was forced to wear a bikini on their eight-day Las Vegas break.
She said: "Everyone was like, 'Are you going to be worrying about strippers?' and I was like, 'The competition I had on my hands was being handcuffed to a dwarf, so it's all good!' "
Rochelle's bandmate Frankie admitted they are planning a "crazy" evening for their friend.
She told the Daily Star newspaper: "We're gonna have a crazy one and try to give the boys a run for their money.
"We've planned lots of fun stuff with the maids of honour.
"It should be exciting. We're not going to let them off lightly.
"There'll be willies, strippers, the usual.
"There's a lot of us going so it will be interesting."