Reality star and former Hugh Hefner love interest Holly Madison is off the market -- because she's now engaged to her daughter's father, Pasquale Rotella.

"Thank you @pasqualerotella for the most special night of my life! I can't wait to be your wife ❤" Madison captioned an Instagram photo of the night he popped the question.

She also wrote about the engagement on her blog, gushing, "I got engaged on Sunday! My fiancé was so wonderful in creating such a romantic night! He proposed to me at the top of the ferris wheel at EDC Las Vegas."

"I was so happy that so many of our close friends were there to share the wonderful moment with us! We rode around the festival on the art cart until the sun came up! I couldn't have asked for a more wonderful or magical proposal!"

Their baby daughter, on the other hand, is just glad Mom and Dad are tying the knot. With a name like Rainbow, it won't be long before she'll need all the family support she can get.