The Boutique was originally called the Carousel Couture. It was to have an actual working carousel with carousel horses serving as mannequins for Rarity's designs; but the design was rejected.
EpisodesIn Sisterhooves Social, Sweetie Belle and Rarity make breakfast in a kitchen on the ground floor. Sweetie Belle also enters the laundry room and makes use of a clothesline that is strung up outside. She also accidentally cleans Rarity's "inspiration room" that Rarity uses to design new outfits. This room also contains a bed. In Suited For Success, Rarity's bedroom, which is on the upper floor, serves as an additional work area for personal projects. The diamond on the lower half of the front door flaps open, presumably for Opalescence's use as a cat flap. Sweetie Belle also uses the flap in Hearts and Hooves Day.
Outfits for sale at the boutique include wedding dresses, as seen in Hearts and Hooves Day. At least two fashion celebrities have visited Carousel Boutique; the first one is Hoity Toity, who attends Rarity's second fashion show in Suited For Success. He is so impressed with her outfits that he places a rush order for six dozen, to be featured at his Best of the Best Boutique in Canterlot. The second celebrity is Photo Finish, who comes to the boutique in Green Isn't Your Color to take pictures of some of Rarity's dresses. Sapphire Shores, a famous pop music performer, stops in at the beginning of A Dog and Pony Show and orders six gem-encrusted outfits for her upcoming tour.