Article continues below advertisementNaomi Campbell is proving once again that age is just a number.The 55-year-old supermodel wowed fans while vacationing in Ibiza, slipping into a sleek black bikini as she took a dip in a luxurious pool. With her toned abs and glowing smile, Campbell looked effortlessly glamorous under the Mediterranean sun.Article continues below advertisementSource: @naomi/InstagramNaomi Campbell looked stunning in Ibiza.