With Dave Grohl purposely injured so he doesn't have to expose himself to an army of facepainters, this years Glasto is likely to be more subdued.
However you can still have a jolly time with our style list.
1) Juniper Cholera Water. This flavoured water has the added bonus of already having cholera in it so you don't have to mud bathe.
2) Wrist bands from previous years will be available so you too can look like a regular. Wear multiple and loudly proclaim how the 'new people' ruin it every year for the veterans.
3) Carry an acoustic guitar everywhere and sit down around any campfire uninvited and strum it. If you can't play it, just sing the most insipid soft american folk song you can think of and thumb the strings on the final note. Bathe in shallow applause.
4) If you are white, affect an 'urban' hairstyle. Dreadlocks, weaves and cornrows are all acceptable forms of caucasian hairstyles for Glasto. This is particularly true if you have a trust fund. If you are black, simply shake your head in disgust at regular intervals.
5) Refer to it only as 'Glasto'
6) Talk in a very loud voice about how much you admire Jo Whiley and how she seem to 'get' you. Then commit suicide for the sake of humanity.