Cue the confetti. These Birthday Bitch ruffle grip socks from Kiss My Grips are the party pair your reformer’s been waiting for—equal parts cute and capable. A soft, breathable knit hugs the foot while the full-coverage kiss-pattern grips deliver no-slip stability on studio floors and the carriage. The playful black lettuce-edge cuff and cheeky cuff text bring birthday-energy to every class, yet the streamlined toe and secure heel keep things performance-focused. Wear them for Pilates, barre, and yoga, or gift them to the birthday babe who loves a little sass with serious traction. Celebration ready, studio approved.