Playmate of the Year Claire Sinclair: This Is What Domestic Violence Looks Like [Photo]

You're looking at the bruising damage 2011 Playmate of the Year Claire Sinclair claims she suffered at the hands of Hugh Hefner's son during a violent rampage this weekend.

TMZ broke the story ... 21-year-old Marston Hefner was arrested Sunday night after allegedly kicking and punching Sinclair during an argument in their Pasadena, CA apartment.

Now, 20-year-old Sinclair tells us ... the Playboy heir has physically abused her on SEVERAL OCCASIONS ... but she's still willing to forgive the guy.

"I don't condone domestic violence, but if one ounce of good can come from this bad experience, then I can live with it and move on" ... Claire says.

"That is why I will not press charges against Marston Hefner if he keeps his word to give a public apology for physically abusing me on several occasions, and seeks psychiatric help for his anger issues."

Hugh also released a comment on the situation ... saying, "If they care about each other, they'll patch it up."

So, we gotta ask ...