Rihanna, Jessica Alba and Olivia Palermo in boyfriend jeans

Rex

They're this summer’s ultimate dressed down but super cool style staple  – the boyfriend jean is being championed by Hollywood’s finest fashionistas including Rihanna, Jessica Alba and Olivia Palermo.

Proving boyfriends jeans are not just for daytime, Rihanna dressed up her ripped boyfriend jeans with an on-trend Stella McCartney backless crop top, matching holographic bag and heels for a night out in London.

THE DENIM GUIDE

In contrast, Olivia Palermo looked casually cool by teaming her boyfriend jeans by Paige with a Tibi shirt underneath a timeless white jacket by Rebecca Minkoff. Accessorising with a Mulberry bag and Andrea Carrano shoes Olivia gave a perfect lesson in downtown daytime chic.

Style maven Jessica Alba took a leaf out of Olivia’s book by turning to Rebecca Minkoff to finish her look – but this time it was a tote that the actress choose to accessorise with along with a statement blue Reese + Riley blazer. Balenciaga sandals completed the laid back but well put-together look.

DIP-DYE HAIR

With celebrities including Rachel Bilson, Jennifer Aniston and even Victoria Beckham working the comfy but stylish fashion staple, they're bound to be a huge summer hit! Stock up now…