It turns out that the still cut that MLD Entertainment released of Jung Chae Yeon in a wedding dress wasn't a cut from Momoland's MV!
She's actually the star in Noel member Jeon Woo Sung's "Congratulatory Song", which is the 5th single in the '2018 Yeonga Project'. The teaser of the MV shows Jung Chae Yeon looking gorgeous as a blushing bride.
Check out the beautiful teaser above. You can hear the full song and watch the full MV on June 8 at 6 PM KST.