However, there isn't enough information available to pinpoint exactly who you're referring to. "The Next Star" could be a show from a specific country or region, or perhaps it's a local talent show.
To help me find the Mimosa you're looking for, please provide me with more details like:
* The country or region where the show aired.
* The year the show aired.
* Any other information about Mimosa, like her age or what category she competed in.
Once I have more context, I'll be able to provide you with the information you're looking for!