Katie Waissel (born 24 January 1986) is an English singer-songwriter who came into the public eye when she was the tenth contestant eliminated in the seventh series of The X Factor.

[1] In mid-to-late 2009, Waissel starred in an interactive, online reality show Green Eyed World, sponsored by Sprite.

The show focused on her journey in the US and Europe in hopes of a record label in 14 episodes of roughly 5 minutes in length each.

At bootcamp, she sang "Make You Feel My Love" and reacted with shock when she was the first girl put through to the judges houses.

She sang "Don't Let Me Down" in the final showdown and was saved from elimination by the judges by a majority vote, with only Cowell (F.Y.D.

The result went to deadlock this time, but Waissel was announced as safe when it was revealed that Belle Amie had the fewest votes.

[7] In May 2013, Red Velvet released their first song for free download, entitled "I'm Fine", about Waissel's failed marriage to Alphonso, adding a message on her Twitter page thanking her fans for their support.

Fellow Housemate Christopher Biggins was removed after making a racist joke about the Holocaust towards Waissel, who is Jewish.

Waissel made two appearances in Vanderpump Rules as herself in Series 4 Episode 1 at Scheana Shay's decade themed 30th birthday party, alongside Kristen Doute.

Secondly in Episode 10, where it showed her in her real life role as an office manager of a tattoo removal company in Los Angeles.

In January 2023, it was reported that she was trying to sue Syco Entertainment for breach of duty of care, and had founded the OWHL Foundation, a charity "overseeing welfare, human rights and liberty within the creative industry sector".