Philip Treacy le Bon, Kate Moss, Christy Turlington and Stella Tennant modelling in return for keeping Treacy's hats, which were all black. In 1994, he opened up his boutique at 69 Elizabeth Street, in Belgravia, London, right beside Isabella Blow's resicence at number 67. Treacy has designed hats for Alexander McQueen (another discovery of Isabella Blow), including his 1999 "white collection" for Givenchy Haute Couture in Paris, for Karl Lagerfeld at Chanel, and for Valentino, Ralph Lauren, Donna Karan, Versace and Rifat Özbek. In January 2000, he became the first milliner for 80 years to be invited to exhibit at the Paris
Keith Treacy made his Stockport County debut, in a 1-1 draw against Macclesfield Town on 25 November 2006. Treacy made four appearance for the club. After ending his loan spell at Stockport County, Treacy signed a new contract with the club on 12 June 2007, keeping him until 2011. After signing a new contract with the club, Treacy made his Blackburn Rovers début in a League Cup tie against Portsmouth as a substitute and made his first start against Coventry City in the FA Cup third round in a 4–1 defeat back in 2008, before being substituted off and replaced by striker