The team colors are pink, white and blue.
Hilton wore a low-cut, pink and white, rhinestone-studded racing suit. Team riders Sergio Gadea and Maverick Vinales are expected to wear more reserved outfits.
"I'm so proud of my new motorcycle team. So exciting!" Hilton tweeted on Saturday.
Hilton has agreed to attend at least five races next season.
The Associated Press contributed to this report