Behr is a graduate of the Sylvia Young Theatre School, and was discovered by Pet Shop Boys manager Tom Watkins, who put her in his female Bros concept, Faith Hope & Charity singing alongside Diana Barrand and future Xpansions member Sally Ann Marsh, signed to WEA.

In 1989, Behr had a brief appearance in Grange Hill and then later was a presenter on the late night Channel 4 music show, The Word, for five years.

In between TV, Behr has also presented radio shows for Kiss 100, and has had some minor film acting roles and appeared alongside Kate Winslet, Oprah Winfrey, Glenn Close in the play The Vagina Monologues both in London at The Old Vic and on Broadway at Madison Square Garden.

After marriage and the birth of her two children, Behr attempted a UK television comeback on the 2008 edition of ITV's I'm a Celebrity... Get Me out of Here!

On 20 September 2009, Behr appeared in a celebrity episode of Come Dine with Me alongside Laila Morse, Dane Bowers, and Bobby Davro.