R&B singer John Legend and his model girlfriend Chrissy Teigen have revealed that they'll be tying the knot this fall, nearly two years after they got engaged.

The Sports Illustrated swimsuit model revealed that she'll be wearing a Vera Wang dress for her big day -- and she'll also be sure to take her anxiety medication.

Teigen says that she takes anti-anxiety medication Xanax every day to combat her ailment, but sometimes it doesn't do much for her.

"I've got to be honest," she says, "I have such bad anxiety that sometimes I don't believe I've even taken the pill in the morning!"

The couple hasn't made the date public, but the model has shared the details on the cake for her big day.

"Lady M in NYC does the best crepe cake. It's amazing. Layers and layers of crepe drizzled in raspberry sauce," she tells the New York Daily News.

Last week Chrissy slammed rumors that her fiance cheated on her while out in New York recently after the New York Post ran a story that said Legend had a "steamy makeout session" with a mystery blonde.

She referred to the paper as a "s**t rag."