While we were more than excited to spy a Louis Vuitton-clad Emma Roberts out and about at the fest on Friday, seeing Sienna and Kate back on the Glasto scene has got our fashion-radar going overtime, with their appearance meaning it shaped up to be the most celeb-studded fest in years.
Classic denim cut-offs were a favourite with the stars, as ever, with Alexa, Sienna and Kate all opting for the short-shorts, as they soaked up the sun and strutted their stuff around the VIP area.
Sienna finished her look by tugging on some walking boots and popping on a panama hat for her signature boho cool.
Kate meanwhile worked old-school grunge in an army surplus jacket and aviator shades, and Alexa went for her signature kooky-cool in a striped shirt and multi-buckle Mary Janes.
We also spied Kate Hudson dancing away to Kylie and moshing to Muse in some strappy gladiators. Clearly wellies are off this year's festival style-menu!
Right, we've got our fashion notes. Which look will you be opting for come your next fest?
By Hayley Spencer
SEE INSTYLE'S FESTIVAL FASHION SHOOT