Brook wore her hair in classic movie star waves and added a pair of sparkling earrings to the look as she promoted new movie Keith Lemon: The Film.
Smoky eye-make-up and a burgundy lip emphasised the 32-year-old's features. Later on, she changed into another showstopper of a dress.
Brook attended the after party in a bright red fitted number with a plunging neckline and clinched-in waist.
Crafted from a textured fabric, the pleated frock featured lace detailing on the sleeves and once again showed off the model's hourglass figure to perfection.
She kept the same earrings and handbag throughout the outfit changes, but added a little extra razzle-dazzle with black and silver sparkly peep toe heels.