Isaac Mizrahi is an American fashion designer, best known for his eponymous fashion label. He is also a TV presenter, author, and actor. He has been credited with bringing high fashion to the masses by making it more accessible and affordable. He has dressed some of the world's most famous celebrities, including Oprah Winfrey, Sarah Jessica Parker, and Beyonce. His designs have been featured in numerous magazines and on the runway. He is considered one of the most influential designers of the 21st century.