But both chose to play it safe in black dresses last night (Wednesday, 26 June), for the Serpentine gallery's summer party, held in London's Kensington Gardens.
And as you'd expect from two of the world's highest earning models, both Kate, 39 and Naomi, 43, looked nothing short of immaculate.
Kate opted for a gothic sheer black lace floor-sweeping gown with a plunging neckline, pointed Christian Louboutin high heeled court shoes and a classic black tuxedo jacket - a Moss favourite - over the top.
Naomi, meanwhile, chose a structured long sleeved black mini dress and studded black ankle boots, expertly showing off the famous Campbell pins.
Croydon-born Kate and Naomi, who hails from nearby Streatham, were both regular fixtures on fashion front covers and in high profile ad campaigns throughout the '90s.
But while Kate is busier than ever, Naomi Campbell has kept a much lower profile in recent years.
Last night, however, the South London girls proved they've still got it, even decades later.
And Kate still has form when it comes to staying out late, too, going on to a Park Lane hotel where she partied into the early hours.