Question: The American fashion designer for Bjork's Greatest Hits Tour is the director of what fashion house?

Context paragraphs:
Norman Norell: Norman David Levinson (April 20, 1900 – October 25, 1972) known professionally as Norman Norell, was an American fashion designer famed for his elegant gowns, suits, and tailored silhouettes.  His designs for the Traina-Norell and Norell fashion houses became famous for their detailing, simple, timeless designs, and tailored construction.  By the mid-twentieth century Norell dominated the American fashion industry and in 1968 he became the first American fashion designer to launch his own brand of perfume.

Showgirl: The Greatest Hits Tour: Showgirl: The Greatest Hits Tour was the eighth concert tour by Australian singer Kylie Minogue.  The tour was launched in support of her ninth greatest hits compilation, "Ultimate Kylie".  Beginning March 2005, over 30 concerts were performed in Europe.

Diffusion line: A diffusion line (also known as a bridge line) is a secondary line of merchandise created by a high-end fashion house or fashion designer that retails at lower prices.  These ranges are separate from a fashion house's "signature line", or principal artistic line, that typically retail at much higher prices.  Diffusion products may be on sale alongside designers' signature line but they can also be made available at concession outlets and certain chain stores.  The use of a diffusion line is a part of the strategy of Massification where luxury brands attempt to reach a broader market in order to increase revenue and brand recognition.

Greatest Hits Tour (Björk): The Greatest Hits Tour was the fifth worldwide concert tour by Icelandic musician Björk.  It was launched in support of the release of her "Greatest Hits" album, her box set "Family Tree", and to coincide with the release of her "Live Box" collection.  The tour was supposed to take place one year earlier, but it was delayed as Björk gave birth to her daughter.  The first dates of the tour were announced just two months after the birth.  The tour kicked off with two shows in London on May 24, 2003, and ended with a rescheduled performance in Toronto on September 3, 2003.  The tour visited Europe, Asia and North America with 28 shows in total.  Björk wore outfits and creations from Jeremy Scott, Alexander McQueen and Shoplifter.

Jeremy Scott: Jeremy Scott (born August 8, 1975) is an American fashion designer.  He is the creative director of the fashion house Moschino and the sole owner of his namesake label.  Since launching his brand in Paris in 1997, Scott has built a reputation as "pop culture’s most irreverent designer", and "fashion's last rebel".

Ultimate Collection Tour: The Ultimate Collection Tour (also known as Ultimate Collection Live) is the fourth headlining tour and first greatest hits tour by American recording artist, Anastacia.  The tour supports her second greatest hits complication, "Ultimate Collection" The tour began April 2016 in Italy and performed in 17 European countries and nearly 100 shows.

Oleg Cassini, Inc.: Oleg Cassini, Inc. is an American fashion house founded by American fashion designer Oleg Cassini.  The company is based in Oyster Bay Cove, New York, and was established in 1951.

The Greatest Hits Tour (Girls Aloud): The Greatest Hits Tour was the third concert tour by Irish and British girl group Girls Aloud, in support of their first greatest hits album "".  Girls Aloud returned to Northern Ireland and the Republic of Ireland, having not performed there on 2006's Chemistry Tour.  The band performed sixteen dates in various arenas across the United Kingdom and Ireland, making it their second arena tour.  The Sound of Girls Aloud: The Greatest Hits Tour kicked off in Cheryl Cole's hometown of Newcastle on 14 May 2007 and concluding in near Nadine Coyle's home in Belfast on 2 June 2007.

Greatest Hits Tour (Westlife): The Greatest Hits Tour (also known as The Farewell Tour) was the twelfth and final concert tour by Irish boy band, Westlife.  The tour, visited the Europe and Asia and supported the group's compilation album, "Greatest Hits".  After the tour finished, the group disbanded after performing for 14 years.

Patrick Kelly (fashion designer): Patrick Kelly (September 24, 1954 – January 1, 1990) was an American fashion designer.  Born in Vicksburg, Mississippi, Kelly studied art at Jackson State University and then attended Parsons School of Design.  While in New York Kelly Struggled to find steady employment.  To support himself he had many jobs that included a part time job at Baskin Robbins while continuing to sell his own designs.  After receiving advice from his friend and super model Pat Cleveland and an anonymous one-way ticket he moved to Paris in 1979.  Once there Kelly was promptly hired as a costume designer for a nightclub called Le Palace.  In a small apartment which he shared with a model he continued to sell his own creations and even homemade chicken dinners to make ends meet.  While living in Atlanta at age 18 Kelly sold reworked, recycled clothes and served as an unpaid window-dresser at Yves Saint Laurent.  YSL chairman Pierre Bergé personally sponsored Kelly in 1988 to form the Paris-based womenswear fashion house Patrick Kelly Paris.  Kelly achieved his greatest commercial success in the late 1980s and in 1988 Kelly became both the first American and the first person of color to be admitted as a member of the Chambre syndicale du prêt-à-porter des couturiers et des créateurs de mode.  Kelly died at age 35 on New Year's Day, 1990.  Originally Kelly's causes of death were reported to be bone marrow disease and a brain tumor, but the actual cause of death is now acknowledged to be complications of AIDS.

Supporting paragraphs: Greatest Hits Tour (Björk) Jeremy Scott
Answer: Moschino