“The message is chaos, total chaos,” the designer Sintra Martins said of her spring 2022 Saint Sintra collection, which she showed Tuesday in a relatively nondescript building called The Stranger in Hell’s Kitchen. The steel and concrete foyer at 303 West 57th Street belied the fantasy world inside, behind a pair of orange velvet curtains. The room was carpeted with astroturf and filled with folding lawn chairs and a floor-to-ceiling dollhouse. One corner had a tiki-esque waterfall, another was decorated with a lit-up scoreboard—next to that, a DJ booth with a disco ball. An animatronic elephant wearing a gold collar moved its head around. The place looked like a garden party on psychedelics.