Princess Tiara Cyberooski 3d model

[Paraemon]

Honestly, it feels like Princess Daisy, if she was conceptualised to be in Sonic instead of Mario. There simply isn't another way to put it.

Sonic Retro-supplied reference art of Tiara for Sonic Mars.
The base amount of information supplied for her role in Mars.

While you have the accurate colors, it's just Tiara cosplaying as Daisy with a alternate red dress, with Peach's gloves. Yes, she's a Princess in Mars and at least one iteration of X-Treme, but maybe look into the background of the character to develop her better. She doesn't necessary need to wear a dress to identify as a princess. Look at Sally, for example.

I commend the effort, though.