Sienna Miller put in a rare appearance on the red carpet this weekend at the premiere of her partner Tom Sturridge's new film Effie Gray in London, Mayfair. The 32-year-old actress, who has a daughter Marlowe with her fiancé Tom, brought a welcome dash of colour to proceedings in a Roksanda Resort 2015 dress. She finished the look off with a simple Christopher Kane tote and black Nicholas Kirkwood heels.
Elsewhere in the world of celebrity, Megan Fox wowed the people of Berlin with a form-fitting David Koma gown as she did the promotional rounds for the 2014 film version of Teenage Mutant Ninja Turtles. Over in LA, Julia Roberts' niece Emma proved her style credentials in a structured Saint Laurent gown, while Marion Cotillard worked a casual-smart vibe in a Dior shorts and jacket combo in New York.
Perhaps best of all was the style on the streets: actress Lily Collins nailed her fashion colours to the mast in a monochrome African print two-piece in London and Gwen Stefani looked fab as ever in a grey silk shirt and jeans in Los Angeles.
Come catch up with the highlights from this weekend's fashion, above.
Photos: Rex Features and Getty Images