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
Noel Treacy Taoiseach, with special responsibility for European Affairs. Treacy was returned to Dáil Éireann at the 2007 general election. This was his eighth successive time to be elected. However, the manner in which this was achieved is somewhat unusual in Irish politics for it was Treacy's seventh time to be elected at a general election without reaching the necessary quota of votes. However, following 17 years as a Minister of State in various administrations, Treacy was not reappointed to a junior ministerial post by then Taoiseach Bertie Ahern. He was subsequently appointed Chairman of Joint Oireachtas Committee on the implementation of