Kate Hudson rocked a pastel halterneck gown while Olivia Palermo opted for a low-key look in monochrome at a film screening in New York.
Elsewhere, Kim Kardashian showed off her signature style in a custom Balmain dress at a book launch party in Los Angeles.
Come and see all the best looks from the week so far.
Olivia Palermo opts for a casual look in an oversized black double-breasted blazer, a soft black T-shirt, black leather skinny trousers, and Stella McCartney platforms, adding an element of fun with a Fendi bag charm on her snakeskin clutch bag at the The Cinema Society screening of Mother's Day in New York.
Kate Hudson turns heads in a plunging halterneck pastel gown decorated with geometric shapes in cool pastels, yellow and burgundy. The actress finishes off the look with an Amanda Pearl clutch bag and nude court shoes at the The Cinema Society screening of Mother's Day in New York.
Kim Kardashian wears a custom red geometric sheer Balmain dress with nude sandals at the Naomi book launch party in Los Angeles.
The model opts for laid-back glamour in a sporty grey jumpsuit with a drawstring waist, paired with a black furry clutch and black ankle strap courts at the Naomi book launch party in Los Angeles.
Jodie Kidd wears a custom black and gold Amanda Wakeley dress with beaded tassels and an asymmetrical hemline, accesorised with a gold box clutch and black sandals at the BT Sport Industry Awards in London.
The Victoria's Secret Angel works a monochrome look in a black long sleeve dress featuring an asymmetrical hemline and cut-out detail on the torso, accessorised with black caged sandals and a black, jewelled choker at the Latin Billboard Music Awards in Miami.
Jessica Chastain wears a black and green devoré Prabal Gurung midi-dress with black Christian Louboutin heels at the Long Day's Journey Into Night opening night in New York.
The actress opts for an orange Kate Spade dress featuring a pleated cape overlay and tiered hem, accessorising the look with a black Edie Parker box clutch and black Prada sandals at the Restaurant OURS Launch Party in London.
The model turns heads in a blue lace spaghetti strap midi-dress by Self Portrait paired with a long pendant necklace by Rock & Raw, a small lemon print handbag and nude court shoes at the Restaurant OURS Launch Party in London.
Amber Le Bon
Amber Le Bon works a pastel theme with her lilac hair and a peach ensemble, pairing a sheer shirt with a pleated high waisted skirt. The model finishes off the look with gold jewelled cuffs worn over her sleeves, a pink suede tassle duffle bag and nude suede sandals at the Restaurant OURS Launch Party in London.
Nicki Minaj works a monochrome look in a sheer lace ruffled Givenchy dress with black suede knee-high boots and a black handbag at the Time 100 Gala in New York.
The model opts for a punchy look in a bright purple spaghetti strap maxi-dress by Victoria Beckham paired with black sandals and a glossy red lip at the Time 100 Gala in New York.
Jenna Lyons wears a gold off-the-shoulder blouse with tan wide leg trousers and gold sandals, accessorising the look with black statement earrings, gold bracelets and an Edie parker clutch at the Time 100 Gala in New York.
The singer wears a black eyelet trimmed slip dress with a black tights, studded ankle strap block heels and a chunky black choker at the Time 100 Gala in New York.
The actress pairs a nude Alexander McQueen gown featuring a gathered waist and a cut-out neckline with a deep red lip at the Captain America: Civil War film premiere in London.
Amy Adams plumps for pink tailoring in a blazer and pencil skirt paired with a green sequin cami, accessorising the look with a black and white belt, black peep toe heels and a white Max Mara handbag at the Max Mara Whitney Bag Anniversary Edition dinner in New York.
The Girls star wears a shimmering pastel textured long sleeve midi-dress with sheer white capped toe court shoes at the Matrix Awards in New York.
The actress works a deep red velvet mini-dress by Valentino with black suede court shoes, keeping the look fresh with neutral make up and her hair worn in tousled curls at the Captain America: Civil War film photocall in London.
The Scandal star goes bold in a purple and orange patterned midi-dress with two red poppies on the shoulder, anchoring the look with simple black sandals at the United Way of Greater Los Angeles Women's Summit.
Sarah Michelle Gellar
The actress adds a subtle splash of colour to a black blazer and white circle cut-out fishtail skirt with pastel pink court shoes at the United Way of Greater Los Angeles Women's Summit.
Katie Holmes opts for a matching lace trimmed blouse and skirt featuring a navy and white mini polka dot pattern which creates a larger polka dot effect. The actress finishes off the look with black court shoes and a silver necklace at the Ray Donovan TV series screening in Los Angeles.
Kim and Kourtney Kardashian
Kourtney Kardashian wears a khaki halterneck off-the-shoulder mini-dress by Mystylemode while Kim Kardashian opts for a sheer nude high-neck fitted dress with a pearl encrusted bomber jacket by Balmain at Kourtney Kardashian's birthday party in Miami.
The actress wears a black full skirted midi-dress with cut out detail at the sides, accessorising the look with a nude box clutch and black and silver sandals at the British Academy Television Craft Awards in London.
Kate Beckinsale opts for a bright orange ruffled maxi-skirt by Solace London and a silky cream cami, adding a further pop of colour with turquoise Brian Atwood sandals at Newport Beach Film Festival in Balboa Bay Resort.
Selma Blair wears a black wrap-top Christian Siriano dress with cut out detail at the front and cape-style sleeves, finishing off the look with black patent court shoes at the Geezer film premiere at Tribeca Film Festival in New York.
Drew Barrymore works a casual look in a black tee, a softly tailored grey boyfriend blazer, light wash straight leg jeans and black flats. The actress adds a touch of glamour with a glossy red lip and matching nails at the Safe Kids Day event in Los Angeles.
The actress wears a black and white bodycon dress with an asymmetrical hemline, accessorising the look with a large black tote bag and black court shoes at the Safe Kids Day event in Los Angeles.
The singer opts for a laid-back look in a short sleeve denim shirt tied at the waist, distressed white skinny jeans and Nike trainers at the Safe Kids Day event in Los Angeles.