Holly Madison married Pasquale Rotella during a ceremony in Disneyland on Tuesday, the model confirmed.
"Marriage license, check!" Madison posted to Twitter on Tuesday.
The "Girls Next Door" star and Rotella had been dating since 2011 and welcomed their daughter Rainbow Aurora on March 5. However, the pair waited until now to marry.
"Entertainer/model/producer Holly Madison exchanged vows with CEO and founder of Insomniac Events Pasquale Rotella on Tuesday, Sept. 10 at 10:40 p.m.," Madison's rep revealed, according to Us Weekly.
"Their six-month-old daughter Rainbow was the surprise guest of honor," the rep added.
An avid fan of Disney princesses, Madison's wedding took place inside Disneyland Resort in Anaheim, Calif. It is the first marriage for both the 33-year-old and her groom.
Madison is the former girlfriend of Hugh Hefner. They were together for seven years before their split in 2008.
Three months after the pair welcomed daughter Rainbow Aurora, Rotella presented Madison with a custom-designed ring while the pair rode the ferris wheel at EDC Las Vegas.
"I got engaged," the former Playboy model posted to her official blog following the proposal. "My fiancé was so wonderful in creating such a romantic night!"
Similar to their daughter's colorful name, Madison's engagement ring features unique gemstones and adornments- all hand-selected by her fiancé.
"My fiancé designed it himself because I told him that's what would make it most special," Madison explained, according to Celebuzz.
The ring consists of a large yellow diamond surrounded by flowers formed from purple, yellow and light green gemstones on a rose-gold band.
"The band is Art Noveau inspired to go with flowers," Madison continued. "Because we love owls, there is a hidden owl engraved on the rose gold in between two of the flowers."
Ahead of meeting Rotella, the former "Girls Next Door" star said she was "never dating anybody again."
"Definitely being with the right guy has a lot to do with it," she gushed of Rotella, according to People magazine. "My relationship is awesome. I'm happier than I've ever been in my personal life."