Hefner was charged with battery on a spouse and released a few hours later after posting a $20,000 bail. (Hefner and Sinclair were not married but under state law a "spouse" can be considered a cohabitant.)

No court date has been set yet.

Today, Sinclair took to Twitter to thank her supporters. "There's two types of pain in the world - pain that hurts you, and pain that makes you stronger. All of your positivity is giving me strength," she wrote.

Last night, shortly before the incident, Sinclair retweeted a photo of her attending a Grammy-themed fundraiser at the Playboy Mansion with Hugh Hefner and several other Playmates.

In it, she wrote: "Had so much fun with you guys xoxoRT @hughhefner."