Kelly Osbourne has taken to her Twitter page to apologize to fans for pulling out of an appearance at a gay pride event in Los Angeles on Wednesday night after falling ill with food poisoning.

The former Dancing With The Stars performer was due to host a celebration at Eleven Nghtclub in West Hollywood last night, but became sick to her stomach after attending this week’s LOGO NewNowNext Awards. While Kelly is disappointed to have missed the event, she expects to be well enough to attend the city’s gay pride parade this Sunday, where she and mom Sharon will serve as this year’s Grand Marshals.

“I got food poisoning last night and have been up since 3am throwing up in more ways then one. Thank God it’s stopped! I cant believe my luck!” Kelly Tweeted overnight. “My deepest apologies to anyone I disappoint but I am still too sick to make it to Eleven for my gay pride event tonight. I’m literally gutted. But all is not lost, my mother will still be there and I will see you all on Sunday! Again I’m so sorry I feel like i have let people down.”