Iggy Azalea's hens party will involve pizza, knitting - Demi Lovato

Iggy Azalea and her bridesmaid-to-be Demi Lovato. Photo / Getty Images

Demi Lovato has warned fans of her pal Iggy Azalea not to expect tales of debauchery and craziness from the Aussie star's upcoming hens party, insisting it will probably consist of pizza and knitting.

The Black Widow rapper is planning her wedding after becoming engaged to basketball star Nick Young last month, and she recently told US late-night show host James Corden that neighbour Demi will be among her bridesmaids.

Lovato now reveals she's helping to organise Azalea's pre-ceremony, all-girl get together, and she insists it won't be a wild party.

"The bachelorette party will probably consist of pizza and knitting," she tells SiriusXM Hits 1's The Morning Mash Up.

"I literally have knitted with her but she didn't knit back. She was like, 'You have to teach me'.

"That's how boring we are."

Lovato also revealed she and Iggy became good friends just before Christmas last year as they bonded over tinsel and festive decorations.

"Our first time hanging out, we went to (discount retail store) Target and then we bought Christmas decorations and things to make a gingerbread house with," she said.

And the Skyscraper singer was with her new best pal when Young proposed to the 25-year-old.

Lovato recalled, "She was like, 'You're going to be a bridesmaid!' I was like, 'Don't get my hopes up. I hope you're serious'."

Azalea has kept her word and the singer/actress will be one of four friends helping the bride-to-be get extra Fancy on her big day.

- WENN