Ophelia held both hands in a straight line beneath her chin and tilted her head slightly to the left. It was her thirteenth or fourteenth time running through her version of the new TikTok dance she was about to post. The lengthy rehearsal was necessary. Ophelia was an insane perfectionist about all things social media, from the dance moves to the fit. And today’s fit was, indeed, fire. She wore a pair of peach Forever 21 biker shorts hiked up to accentuate her waist and lift her butt, plus a silver tri-back sports bra that held everything in just right. Ophelia pictured the comments she was going to get and caught her breath. Calm down. One more time through the choreography and she’d be good to go. Ophelia mouthed the words to “Sequin Baby” as she practiced in front of her iPhone which sat in silent appraisal on the dresser. After a few false starts, she tapped the screen to begin the performance for real. This time she captured the fluid, flirty flow she’d been …