Ashley Hebert and J.P. Rosenbaum's wedding special is now official.

ABC has confirmed it will air The Bachelorette: Ashley and J.P.'s Wedding in December.

According to the network, The Bachelorette: Ashley and J.P.'s Wedding will cover Hebert and Rosenbaum's wedding ceremony as well as all the events leading up to it -- including the dress fittings for Hebert's custom-made gown, the couple's meetings with their wedding planner, and their bachelor and bachelorette parties.

In addition to the couple's family and friends, prior The Bachelor and The Bachelorette participants will also be on the wedding guest list.

ABC has not anounced whether The Bachelorette: Ashley and J.P.'s Wedding will air as a one-shot similar to The Bachelor: Jason and Molly's Wedding, Jason Mesnick and Molly Malaney's two-hour 2010 wedding special, or use a miniseries format like Trista & Ryan's Wedding, the three-part miniseries which chronicled the wedding of first-season The Bachelorette couple Trista Rehn and Ryan Sutter in 2003.

Us Weekly had reported Hebert and Rosenbaum would wed in December and the ceremony would air on ABC earlier this month.

Hebert, 28, and Rosenbaum, 35, got engaged when she selected him over fellow bachelor Ben Flajnik during the seventh-season finale of The Bachelorette, which aired in August 2011. They will be only the second couple in The Bachelorette history to wed.

Hebert recently graduated from dental school at the University of Pennsylvania and is currently completing a specialty in pediatric dentistry at St. Christopher's Hospital for Children in Philadelphia while Rosenbaum is a construction manager in New York City.

Earlier this year, the couple announced they had decided to move to New Jersey together to better convenience Hebert in her dentistry career.

"We've been living in New York and I got into a pediatric residency in Philadelphia, so we decided to move halfway," Hebert told Us Weekly. "He'll commute and I'll commute. It's a lesson in relationships."