12 Things You Can Only See At Lollapalooza 2014

From Rihanna surprising fans to a toothless Ryan Gosling, here's a dozen things you won't see at any other festival this summer.

CHICAGO, Illinois — Lollapalooza 2014 has come and gone, and while some memories from this last weekend will fade over time, there are a few moments from this three-day extravaganza that can never be forgotten … even if you tried.

Whether it be in the form of a surprise performance, an amazing cover, or a festival-goer just wilin’ out, some of this sh– can’t be see anywhere but here. So MTV News took it upon ourselves to gather some of our favorites. Enjoy!

1. Eminem And Rihanna On Stage Together

MTV News/Gil Kaufman

That is, of course, until the Monster Tour.

2. Kings Of Leon Covering Robyn

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The band closed down the festival singing “Dancing On My Own” during their set for the first time in concert.

3. Festival Goers Using Porta Potties As Shelter From The Rain

MTV News / Andrew MacLean

A downpour of rain didn’t stop any attendees who either embraced the waterworks, or chilled out in the Honey Buckets for a bit.

4. A Tickle Bug Outbreak

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