You’ve scored tickets to Lollapalooza and the weather forecast looks:



Sunny:

 



Go for Isabel Marant's Navajo-inspired sweatshirt, ($560, www.mytheresa.com), and wear it with a pair of cut-off denim shorts and Minnetonka boots (they're trendy again, thanks to Kate Moss).

 

Overcast, rainy and chilly:

 



Keep the sweatshirt and cut-offs, but lose the shoes. Instead, waterproof your look with an ASOS Rainmac ($87, www.asos.com) and boots that will hold up in the mud, like a pair of Dr. Martens.

 


You’re heading to Tennessee to see Radiohead at Bonnaroo and your travel companions are:

 


Three of your best girlfriends:



Now's the chance to wear that fringed kimono ($78, www.asos.com) you bought that your boyfriend makes fun of. He doesn't seem to understand that Asia is having a moment in fashion right now, but your girlfriends totally do.


Your boyfriend, his office buddy and his wife:



Try a sexy, breezy dress ($139, www.pixiemarket .com) that will take you from a day of dancing in the sun outdoors to a respectable grownup dinner afterward.