While some stars celebrated Halloween in ghoulish costumes, others slipped into glamorous gowns for LACMA's: Art+Film Gala in Los Angeles over the weekend.
Monaco's Charlotte Casiraghi, who is fifth-in-line to the throne, stepped out to the Saturday night event held in honour of artist Barbara Kruger and filmmaker Quentin Tarantino.
As the new face of Gucci, Charlotte, 28, showed her support for the Italian fashion giants, who were presenting the night at the Los Angeles County Museum of Art.
Arriving in a flowing, halter-neck Gucci gown, Charlotte may well have been the envy of guests around her as she flaunted her impeccable style and statuesque figure.
The royal donned a chic blue and green column dress, which featured a striking floral pattern and beaded embellishments around the waist and neck.
The brunette stunner let her natural beauty shine through as she applied just a touch of lipstick and minimal teal eye shadow to match her gown.
Charlotte spent the evening mingling with the likes of Gucci creative director Frida Giannini, Francois-Henri Pinault and Hollywood actress Salma Hayek.
Cara and Demi both opted for black LBDs, with the Burberry model jazzing up her short black dress with a cape that featured a sequined lining. Demi, likewise, defied her 51 years of age in a tight gown that showed off her svelte figure
Actress Kate went pretty in pink, channelling a Grecian goddess in a flowing, wrap-around dress. The blonde beauty had her hair styled into loose tousles and wore just a slick of pink lipstick.
Cindy, meanwhile, arrived on the arm of her husband Rande Gerber, lighting up the night in a plunging, sequined silver gown.