The famed UFC ring girl and model appeared over the weekend at The Fifth, a hip new rooftop bar located atop the Grand Legacy At The Park in Orange County.
Celeste was hosting pre-fight event for UFC 241, which was taking place nearby at the Honda Center in Anaheim.
UFC 241 featured some big fights, including Nate Diaz vs Anthony Pettis and Stipe Miocic vs Daniel Cormier.
Meanwhile, the 33-year-old swimsuit model was meeting with fans and signing copies of her new 2020 calendar.
We're told the event was great, and everyone was stoked to check out Celeste's new calendar.
The Fifth boasts a 5,000 sq ft venue with tons of room for drinking, eating and dancing.
It also happens to be directly across the street from Disneyland, and offers spectacular views of the Happiest Place on Earth's nightly fireworks show.