In 2007, a unicorn was released as part of the Bratz Fashion Pixiez line. They were rereleased in 2011 as Glowing Unicorn (referring to the glow-in-the-dark horn).
In 2021, the mold was reused for MGA’s budget doll line Dream Ella. Unicorns were released in three colors. Here are some comparisons of Bratz vs. Dream Ella:
Bratz Western Horses
The same mold, minus the horn.