The actress-and-singer has played Violet in the revival of the hit US TV show since March but now producers have decided not to renew her contract along with her co-star Colin Egglesfield.
The show's executive producer Todd Slavkin said: "It was the original plan going into the development of the show. We felt that once the murder mystery, which involved their characters, was resolved, the tone of the show was going to shift
and Ashlee's character would move on."
After the news was announced, Ashlee said: "Having the chance to play Violet on 'Melrose Place' has been a thrill. Although I always knew her story would come to a final, insanely unpredictable end, playing a creepy, unstable character was something I always wanted to do, so I jumped at the chance. Thanks to the entire cast and crew of Melrose Place for allowing me this opportunity."
When she joined the drama, Ashlee - who is married to Fall Out Boy rocker Pete Wentz - couldn't contain her excitement.
She said: "I'm thrilled to be joining the cast of 'Melrose Place' and look forward to being a part of its new generation of residents."
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