The multi-hyphenate and now the latest (and one of the youngest) global ambassador for Lancôme celebrated the new role at the Vanity Fair and Lancôme Toast Women in Hollywood event. For the occasion, she wore a red off-the-shoulder dress from French designer Alexis Mabille's spring 2019 couture collection. The giant bow combined with a sheer skirt looked glam and effortless — it was the perfect look for the night. 

Check out her look and all our favourite celebrity fashion moments from this week.   

Where: At the Vanity Fair and Lancôme Toast Women In Hollywood in West Hollywood

Wearing: Alexis Mabille couture spring 2019 

Where: At Vanity Fair and L'Oréal Paris Celebrate New Hollywood in Los Angeles

Wearing: Louis Vuitton spring 2019 

Where: At the 21st Costume Designers Guild Award in Beverly Hills 

Wearing: Vintage Chanel 

Where: In New York City 

Wearing: Sergio Hudson fall 2018 and Gianvito Rossi pumps 

Where: At the 2019 BRIT Awards in London 

Wearing: Gucci 

Where: At the Vanity Fair and Lancôme Toast Women In Hollywood in West Hollywood

Wearing: Alex Perry resort 2019 

Where: At the 2019 Hollywood For Science Gala in Los Angeles

Wearing: Stella McCartney dress and Nicholas Kirkwood sandals

Where: At the 2019 Hollywood For Science Gala in Los Angeles

Wearing: David Koma Spring 2019, Christian Louboutin shoes, Chopard jewellery and Jimmy Choo clutch 

Where: At the Gucci show during Milan Fashion Week 

Wearing: Gucci Pre-Fall 2019