Irish actress Saoirse Ronan leads the fashion pack in this season's must-have style.
The Oscar-nominated actress wore two different floral print dresses by Mary Katrantzou, in what is fast becoming the hottest style of the season, as she promoted her latest films in recent days.
Earlier this week, Downton Abbey star and Vanity Fair International Best Dressed List nominee Michelle Dockery wore a blue and white dress by the cult designer, just days after Ronan's Atonement co-star Keira Knightley wore a floral frock by Katrantzou.
Astute Irish fashionistas are more than familiar with the A-list designer, whose designs are stocked in Brown Thomas Dublin, with even Amy Huberman sporting one of her €1,100 creations last year to promote her work with the ISPCC.
Katrantzou has long been a hit among stylish women with money to burn in Europe, and she has already collaborated with Topshop for a diffusion collection early last year, which sold out almost instantly.
But Hollywood has finally taken note, with a number of celebrities sporting her elaborate, landscape driven creations in recent months.
The Greek-born, London based designer already counts Saoirse's fellow Oscar nominee Keira Knightley as a preferred client.
For the premiere of Can A Song Save Your Life at the Toronto International Film Festival, she swapped her usual Valentino for Katrantzou to much praise, and has been spotted in the fun, flirty dresses on her summer holidays.
Meanwhile, Dockery relied on the label to earn her kudos as she celebrated her place on the shortlist of Vanity Fair's prestigious International Best Dressed accolade.
Other celebrity fans include permanent fashion 'It girls' Diane Kruger and Alexa Chung, Elizabeth Banks and Rihanna.