Celebrities have always had a significant influence on fashion and designer brands. Their status as trendsetters and fashion icons has made them a natural fit for collaboration with high-end fashion houses. Over the years, we've seen countless celebrity-brand partnerships, some of which have been hugely successful while others have fallen flat.

One of the earliest and most iconic celebrity-designer collaborations was between Audrey Hepburn and Hubert de Givenchy. The two met on the set of the film "Sabrina" in 1953, and from there, a lifelong friendship and creative partnership was born. Givenchy famously designed the black dress Hepburn wore in "Breakfast at Tiffany's," a look that has since become one of the most iconic in film history. Their collaboration set the precedent for future celebrity-designer partnerships and cemented Givenchy's status as a top-tier fashion house.

More recently, we've seen celebrities like Rihanna, Beyonce, and Kanye West launch their own fashion lines in collaboration with major brands. Rihanna's Fenty Beauty line with LVMH has been a massive success, as has her Savage X Fenty lingerie line. Beyonce launched her Ivy Park activewear line with Adidas, while Kanye West has collaborated with Nike, Louis Vuitton, and Adidas on various fashion and footwear lines.

Other celebrities have formed close relationships with designers, becoming the faces of their campaigns and walking in their runway shows. Kendall Jenner has been a longtime muse for Karl Lagerfeld and walked in numerous Chanel shows before Lagerfeld's passing. Jennifer Lawrence has been a Dior ambassador since 2012, while Lady Gaga has worked closely with Donatella Versace, wearing her designs to major events and even starring in Versace campaigns.

Celebrity endorsements have also become a major part of luxury fashion advertising, with stars like Brad Pitt, Charlize Theron, and Emma Stone all appearing in campaigns for high-end brands like Chanel, Dior, and Louis Vuitton. 

However, these partnerships are not without controversy. Some critics argue that celebrity endorsements have cheapened the exclusivity and craftsmanship of luxury fashion, while others have accused brands of exploiting the star power of celebrities for their own gain. Additionally, there have been instances where celebrities have been accused of cultural appropriation or insensitivity in their collaborations with brands.