Cool sunglasses: Pray for sunshine so you can bust out a pair of cool UV-shielding sunnies. (I'm assuming at this point that you know to pack the sunscreen.)
Le Specs Hatter leopard-print cat-eye acetate sunglasses, $55, net-a-porter.com
A packable floppy hat: Just make sure the rim isn't too big. Don't be that girl who blocks the view from the people behind you.
O'Neill Kiki floppy hat, $36, oneillclothing.com
A versatile bathing suit: Bring a bikini that can double as a cute top and appropriate wear for when the water starts spraying around in the mosh pit.
Mara Hoffman shakti-print underwire bikini, $250, net-a-porter.com
A chic poncho: A seasoned festival-goer knows to be prepared for rain. Don't be a sucker and resort to those overpriced plastic-y ponchos that they sell on-site—bring your own stylin' hooded one instead. You'll thank yourself later.
ASOS clear rain poncho, $57, asos.com
Rain boots: Obviously, you'll need a pair of waterproof wellies that pair just as well with a cute sundress as it does denim cutoffs, Kate Moss-style.
Rag & Bone bicolor rain boots, $295, barneys.com
Extra socks: That said, you should be prepared and bring some backup dry socks. The cuter the better.
Uniqlo women's short socks, three-pack, $13, uniqlo.com
An extra layer: A sweatshirt will come in handy when the scorching sun sets and the desert evenings settle in. Bonus points for a super-cute one.
ASOS Sweatshirt with Glitter Heart, $48, asos.com
Facial Wipes: Free flowing H20 might not be that available, so bring some gentle wipes, just in case. They also come in handy to clean up any errant mud splatters.
Simple cleansing face wipes, $6, target.com
A water bottle: Save the planet and bring your own water bottle—BPA-free and empty, of course. You can fill up on the festival grounds.
CamelBak groove insulated water bottle, $25, camelbak.com
A fashionable and functional backpack: It's the best way tote all your essentials and leave you hands free to bust a move, quaff some beverages, and throw some mud around. If you can find one that's Americana-hip, made of lightweight organic cotton, and water-resistant, even better!
Timberland Hookset water-resistant backpack, $90, timberland.com
Coachella weekend kicks off next weekend, then there's Glastonbury, Lollapalooza, and so on. Some festivals are one-day events, others let you unleash your inner hippie and camp out on the grounds (or if you're like me, book the nearest hotel). Either way, the show will go on-rain or shine-so you'll need to pack accordingly.
Start with this basic packing list, and even if you're not headed to any of the above, these items will prove useful for any spring and summer outing like picnics, beach days, hiking trips, beer garden runs...you name it. And if you are headed out to a fest this season, don't forget to check the official website all the dos and don'ts. Have fun!More from Glamour:7 Seriously Award Things Overheard in the Nail Salon10 Beauty Tricks That Make Guys Melt10 Most Wearable Spring 2014 Fashion Trends25 Celebrity Hairstyles That Will Make You Want Bangs