When you’re a seriously unserious actor like Delaney Rowe, a fashion show isn’t just a chance to get dressed up: It’s an opportunity to dissolve into a new character. Rowe’s look for the Ralph Lauren show — hosted at the brand’s HQ on the Upper East Side — was giving her both “the floating dress from Pirates of the Caribbean” and a woman in disguise on the run. This is a cool BTS.”Alexandra Arnold “Someone called me annoying on Reddit the other day. I can’t imagine why.”Alexandra Arnold “A color-story master class.”Alexandra Arnold “Perfect glam by Jackie and Sierra.”Courtesy of Delaney Rowe “My last text I sent. Ah, missed connections.”Alexandra Arnold “And it‘s not about how much I was sweating, but the photos we took along the way.”Courtesy of Delaney Rowe “I edited out the toilet in the background with that nifty new iPhone feature.”Alexandra Arnold “Oh, give it a rest.”Photographer: Alexandra ArnoldHair: Jackie SeabrookeMakeup: Sierra Matthews