Kelly Osbourne may still be mourning the end of her engagement to former fiancé Matthew Mosshart, but she’s not showing it. And instead of sitting at home feeling sorry for herself, the perky “Fashion Police” star is making sure to stay out and about. In fact, we’ve learned the day after announcing her split from Matt, Kelly hit the birthday party of pal “Dingo,” an Oakley pro snowboarder, at Pearls in West Hollywood.

We’re told Kelly rocked an all-black ensemble and had a blast chatting up friends and sipping champagne. Other celebrity guests included Adrien Grenier and pro-skater Ryan Sheckler. “She was very chatty, working the room and talking to various groups of people,” an insider tells Wetpaint Entertainment. “She appeared to be in good spirits and having a good time.”

Kelly and Matt shared news of their split on November 18, explaining that it was amicable.

Kelly and Matthew have decided to end their engagement. The split is amicable and the pair continue to have nothing but the utmost respect for one another," Kelly’s rep told People.

"Kelly is looking forward to a new year full of fresh beginnings."

Here’s hoping she gets it!