Lifetime’s “It’s A Wonderful Lifetime” programming event continues tonight with the premiere of “People Presents: Blending Christmas,” starring Haylie Duff and Aaron O’Connell.

The movie will be a treat for fans, as they are likely familiar with Duff, who has starred in several films. Some of the films fans may recognize her from are “Deadly Delusion,” “The Bachelor Next Door,” “Naughty & Nice” and “Christmas Belle.”

As for O’Connell, fans may recognize him if they’ve watched Hallmark films. He has starred in films for that network including “With Love, Christmas” and “Christmas Made To Order.” He has also starred in other holiday films such as “Candy Coated Christmas” and “This Is Our Christmas.”

Beth Broderick (“Always and Forever Christmas”), Greg Evigan (“The Christmas Listing”), Telma Hopkins (“Christmas Hotel”) and Jennifer Elise Cox (“A Secret Service Christmas”) also star in the film. As another treat for fans, a “Brady Bunch” reunion of sorts will also occur, with Barry Williams (Greg Brady), Christopher Knight (Peter Brady), Mike Lookinland (Bobby Brady), Susan Olsen (Cindy Brady) and Robbie Rist (Cousin Oliver) also starring in the film.

Wo what will happen when this big cast joins together for this film? Let's find out.

“The Hacienda de la Sierra is Emma’s (Duff) favorite place to spend the holiday season and her boyfriend Liam (O’Connell) has been secretly planning to propose to her there, surrounded by both their families,” a synopsis reads. “Emma is delighted when she arrives to find the whole family bunch there.”

Unfortunately, delight soon turns to disaster.

“Of course, no holiday gathering is complete without drama, and soon the families are bickering over every detail!” the synopsis reads. “The added stress from trying to blend the two families eventually takes a toll on Emma and Liam, who start questioning their own relationship.”

Now, after realizing the problems they’ve caused, the families will realize they need to put their differences aside and work together if there is any hope of saving the love that Emma and Liam share. Will they be able to create a little Christmas magic before it’s too late?

“People Presents: Blending Christmas” airs Sunday at 8 p.m. EST on Lifetime.

Blending Christmas
The cast of “People Presents: Blending Christmas” is pictured.  Courtesy of Lifetime