By Fiona Pryor and Ian Youngs
Entertainment reporters, BBC News
What do you get when you put the glamour into camping? Glamping.
That is the term coined to describe festival-goers who are ditching the tie-dye t-shirts and buying brand new wardrobes for these musical events.
With the likes of Kate Moss and Sienna Miller successfully managing to look glamorous - despite wading across a field of mud at Glastonbury - festival fashion is booming.
This Morning's fashion presenter Helen Boyle reckons people are spending up to £250 on festival outfits.
"It's like going on a week's holiday, the amount of clothes you can take," she says.
"If you're going to pack for a festival, you're going to pack for every eventuality and you're going to plan your outfits for the time you're there.
"You might change half-way through the day if you wanted to, depending on what the line-up is."
Glastonbury-goer Vicky Marks, from London, says looking good is important at festivals.
"You don't get to wash, so you're basing it all on your outfit rather than your face and your hair," she told the BBC.
This Morning's Helen Boyle says over the last few years festival fashion has become huge on the high street.
"You've got brands like ASOS, Dorothy Perkins and Topshop all creating capsule collections because of the absolute obsession we have with celebrities and what they're wearing.
"You look at Kate Moss wearing her hot pants and suddenly over the next few years the hottest thing that you should be wearing at a festival are your hotpants and wellies."
Tophop's head of design Karen Bonser agrees that a certain supermodel has made shabby chic cool.
"Kate Moss has kind of pioneered that look of sequins, wellies and mud.
"Then there was Alexa Chung in the Barbour coat, she made that look really cool and effortless," she says.
Festival must have
"Festival-goers want to look like a celebrity, and with the acts mixing with them in the crowd, they feel like they're becoming celebrities."
Radio 1 DJ and veteran Glastonbury-goer Jo Whiley is one of those celebrities who will definitely be spotted amongst the crowds.
Having covered the event for the last 15 years, the 43-year-old knows how to look the part, whilst remaining practical.
Some women are spending up to £250 to look the part at festivals
In a recent interview with The Times she cited a denim skirt, sunglasses, a cowboy hat and "the right wellies" as her festival essentials.
This year's welly - for those with a bit of extra cash to splash - is the Hunter Jimmy Choo.
The faux croc design, embellished with a gold buckle, retails at £250.
There is currently a waiting list for the boots and Jimmy Choo have already sent out pairs to Whiley, Moss, Miller and The OC actress Rachel Bilson.
These are just a handful of the stars likely to turn up at Glastonbury and some of the other festivals, so the boots are being touted as this season's festival must-have.
Emma Smith, 19, told the BBC at this year's Glastonbury Festival that she was wearing a certain brand of wellies "largely" because she had seen Moss in them.
"We did buy some expensive Wellington boots. But we are going to more than one festival this year, so it's an investment," she added.
Sophie Mitchell, 17, from Cheddar in Somerset says she has built up her Glastonbury wardrobe over several months.
"It's a gradual build-up of the Glastonbury staples. There was an important trip for the black wellies. It's just good to look good.
"It's about the music obviously, but I quite enjoy getting ready."
However, if the wardrobe budget does not stretch to a pair of pricey boots, then there is plenty of cheaper alternatives on the high street.
In fact, wellies have been radically made over in the last few years and there are boots available in every possible colour and design.
But once the rain starts pouring and the ground gets churned up, the festival-goers might just forget about fashion.
The focus might just be on staying dry and not getting muddy.