Senior fashion news editor Halie LeSavage probably wouldn't add my 2026 Met Gala outfit to her best-dressed list. But being comfier than her favorite red carpet dresses is still a win in my book. Last night, I traded the "Fashion Is Art" dress code for something more akin to Amanda Seyfried 's jeans outfit and Adidas sneakers on May 5. Seyfried isn't new to the Met Gala schedule. She's been "Cinderella-ing" out of ballgowns and into off-duty outfits for five Met Mondays now. Her "Fashion Is Art" run began in a custom drop-waist Prada dress, which helped pioneer last night's powder pink red carpet trend. The ballgown also reimagined that iconic Mean Girls quote, "on Wednesdays we wear pink," because who could wait two days to debut its thick, regal ruffles? I've been known to sleep in my jewelry after a fabulous night out, but then again, I'm no Met Gala mainstay. By the next morning, Seyfried's Tiffany & Co . diamonds returned to their rightful blue boxes, right alongside her platform Prada pumps.…