Former Girl Next Door's Engagement Surprise for Hugh Hefner

Find out what happened when the Playboy boss announced he had popped the question to Crystal Harris

What do you get Hugh Hefnerand Crystal Harris to congratulate them on their Christmas Eve engagement?

Something naughty? Something nice?

Well, one of Hef's former Girls Next Door girlfriends decided to give them quite a mouthful…

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Bridget Marquardt sent the Playboy boss, 84 and Harris, 24, a box of yummy treats. "Crystal & I received a sweet note of congratulations on our engagement from Bridget Marquardt with a box of Sprinkles "I Do" cupcakes," Hefner tweeted last night, later posting that they shared them with friends during a game of Uno at the Mansion.

He also tweeted a pic of the treats along with Marquardt's note.

In other Hefner Twitter news, his 19-year-old son Cooper has come to the defense of his dad and his young bride-to-be. "Age is truly just a number and all I want is for my dad to be happy," Cooper tweeted. "I couldn't be more thrilled that he has found such a nice women."

Women?!

He quickly clarified, "I didn't mean to put 'women' in my previous tweet. I meant 'woman.' Sorry."