"IS THAT SUPPOSED TO BE TAYLOR?😭" one viewer tweeted.
Gomez's co-star Steve Martin also praises how the pop star "handles everything perfectly."
Eugene Levy & Zach Galifianakis also join the cast as Steve Martin & Martin Short's counterparts.
The actor showed off his musical chops.
The new track was written by Sara Bareilles along with Benj Pasek & Justin Paul and is now available on streaming services.
"It has been deliriously hilarious, challenging and for me, an absolute dream," Gomez added of filming the Hulu show's upcoming third season.
"Just a regular day at work," Gomez said of her bridal look.
The duo snapped a smiling selfie on set.
