GUESS certainly knows how to throw a good party; guests were treated to bubbly Champagne, specially-crafted cocktails, delicious canapés and fantastic music to celebrate the fashion brand's incredible history and new flagship store.
Over 400 guests including Sinitta, George Lamb and Brian Friedman, were also shown iconic images from GUESS's 28-year history featuring shots of Claudia Schiffer, Paris Hilton and Eva Herzigova, that have been put together in a special Photographic Retrospective.
Martine McCutcheon looked cute and colourful in a coral, belted dress and blazer, while Sophie Ellis Bextor (who performed a guest DJ set) looked pretty in polka-dots.
We also spotted former Blue Peter presenter Konnie Huq having her hair styled in a luxurious boutique that was open to anyone wanting a bit of pampering.
Professional hair care company Sebastian were on hand to curl, straighten and glam-up hair before heading to the party.
The Photographic Retrospective named Wonder, Passion, Freedom, is being shown at Il Bottagio on Hyde Park corner from today until 2 November.
Be sure to see this incredible collection of iconic photographs while it is on show.
By Georgie Hindle