GLASTONBURY, ENGLAND - JUNE 23: The first of the 140,000 music fans due at this year's Glastonbury Festival begin to arrive at Worthy Farm, Pilton on June 23, 2010 in Glastonbury, England. The gates opened this morning at 8am to what has become Europe's largest music festival and is celebrating its 40th anniversary. (Photo by Matt Cardy/Getty Images)

Thousands of music fans descended upon Somerset yesterday for the start of the Glastonbury music festival, which celebrates its 40th anniversary this year. But instead of the usual rain and mud, they were greeted with sunshine - a welcome sight with high temperatures forecast for the three-day event. So does this mean that Wellingtons, the Glasto fashion staple, will be obsolete this year? Don't bet on it.

A festivalgoer arrives with her bags at the Glastonbury Festival 2010 in south west England, June 23, 2010.  REUTERS/Luke MacGregor (BRITAIN - Tags: ENTERTAINMENT SOCIETY)

Many of the revellers to arrive were already sporting designer wellies, Topshop print dresses, Barbour jackets, denim cut-off shorts, and straw trilby hats.

Hundreds of acts are set to perform at this year's festival, they include the Gorillaz, Muse, and Stevie Wonder. There will also be plenty of opportunities to celeb-spot, with many of London's starlets expected to attend the event.

I wonder if Kate Moss will be one of them?

Are you heading to Glastonbury this year? If so, what fashion do you have planned? Will you be bringing your Wellies or giving them a miss? Tell us by leaving your comments below.

For the ultimate festivals guide, visit OSYOU who have rounded up the best of the best events this summer.