Rumer Willis for CSI:NY

Rumer Willis is to appear in the 100th episode of hit US TV show CSI: NY.

The 20-year-old daughter of Bruce Willis and Demi Moore – who can soon be seen in The House Bunny, a comedy set in Hugh Hefner’s Los Angeles’ Playboy mansion – will play a character called Mac Taylor, who shares the same name as that of the show’s main detective, played by Gary Sinise.

In the episode, forensic investigators will hunt for a serial killer who is murdering people called Mac Taylor.

Other famous faces set to appear in the special episode, which will air on November 19, include Guerrilla actress Julia Ormond and rapper Nelly.

The cameo will be Rumer’s second TV appearance in just over a month as she is also set to feature in Army Wives.

She will play the wife of a young soldier injured in Iraq in one episode, due to hit screens on October 12.

The actress – who is to be Miss Golden Globe at this year’s awards, a role traditionally given to the child of a famous star – recently revealed starring in The House Bunny was a “massive learning experience” and she enjoyed working with Scary Movie actress Anna Faris.

She said: “I’m fortunately lucky, because I got to work with Anna Faris. It was really cool.

“It’s been very different and I have to say, probably the biggest learning experience I’ve ever had, just to be able to do it and all the responsibility is on you. I felt very grateful to be a part of it.”