“Nashville” Season 3 kicked off with Rayna’s (Connie Britton) engagement and the mid-season finale will end with a wedding — if Deacon (Charles Esten) doesn’t ruin it. In a new sneak peek video for “Nashville” Season 3, episode 10, Rayna’s fitting for her wedding dress is interrupted by her sister Tandy (Judith Hoag).

In the sneak peek, Tandy greets the girls and compliments Rayna’s dress. Rayna tries to defend her dress choice, but Tandy isn’t worried about the dress. She’s worried about her ex.

“I had picked something a little more modern," Rayna says. "We had all these issues with paparazzi and, you know, Luke is a traditional guy.”

“You don’t have to sell me on the dress," Tandy says. "I love it. So are you already for the big day?”

“I think so,” Rayna says.

"And you don’t think that Deacon’s gonna do like a last minute—" Rayna's sister asks.

“Oh, he was pretty upset with that Rolling Stone article, so I haven’t talked to him in a couple weeks,” Rayna says. She fails to mention that Deacon also said he was still in love with her.

While Rayna’s sister has never really been on Deacon’s side, Tandy isn’t quite sure that her lack of communication with Luke is a good thing. She wonders if Rayna is really happy.

Watch the sneak peek video from “Nashville” Season 3, episode 10 below:

The “Nashville” Season 3 mid-season finale airs Wednesday, Dec. 10 at 10 p.m. EST on ABC. Do you think Deacon will stop the wedding? Sound off in the comments section below!