The London theatre world had its biggest Amanda Holden looked stunning in a blue asymmetrical dress from Ralph & Russo.
Also in attendance was Mad Men's Elisabeth Moss, currently starring in The Children's Hour alongside Keira Knightley, and Legally Blonde stars Sheridan Smith and Jill Halfpenny, who won the awards for Best Actress and Best Supporting Actress in a Musical, respectively (Legally Blonde also took home the Best New Musical gong).
While Moss went for a floor-length champagne gown (which complemented her blonde locks), Halfpenny made a statement in red lace Dolce & Gabbana and Smith opted for a ruffled white prom dress.
What do you think of the stars' red carpet looks? Leave a comment and let us know.