Julia Roberts, who played Anna Scott in the film, looked radiant in red as she attended the London premiere where she famously rocked hairy armpits on the carpet.
Princess Diana's brother Charles Spencer, the 9th Earl Spencer showed up to the London premiere of Knotting Hill with his then-girlfriend, and eventual second wife, Caroline Freud.
Rhys Ifans, who plays the hilarious flatmate Spike in the film, was all smiles with his then-girlfriend Jessica Morris at the England event.
The country singer, whose song appears in the film, shinned in London as she posed in Leicester Square.
The adorable Emma Chambers, who played everyone's favorite quirky sister Honey, dazzled in red.
The House star appeared at the world premiere to celebrate Knotting Hill.
Of course the "Tiny Dancer" singer rocked colored glasses as he posed at the premiere.
Roberts attended the New York premiere of her film with then-boyfriend Benjamin Bratt looking sleek and chic in black.
The dreamy Hugh Grant, who played William Thacker in the movie, was as handsome as ever when she showed up at the NYC premiere.
Actress Eva Amurri watched the film with her mom Susan Sarandon's longtime love Tim Robbins and rocked a perfectly '90s dress while doing so.
Actresses and Cabaret co-stars Marisa Berenson and Liza Minnelli enjoyed a night out at the American premiere of the rom-com.