Getty Images/Seth McConnell

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

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

In addition to taking in some shows this weekend, one festival goer spent her time at Lolla infecting people with the Tickle Bug.

5. Feline Fashion Making Its Festival Debut

Kitty clothing was the cat's meow this festival season.

6. Lorde Laying Around Lolla

Sometimes a girl just needs a break.

7. Andre 3000's Lollapalooza Message

MTV News/Gil Kaufman

OutKast has performed at more than 20 festivals this summer and at almost every show Andre 3000 has rocked the same coveralls with different text each set. For Lollapalooza it read: "across cultures, darker people suffer most. why?"

8. Toothless Ryan Gosling

MTV News/Gil Kaufman

Still. Hot.

9. Chance The Rapper And Big Boi Backstage

Festival friends!

10. Men Flipping Out For Vic Mensa

Literally.

11. Someone Break Dancing To Lorde

Or attempting to break dance. #LordeOfTheDance

12. Treetop Selfies During Iggy Azalea's Set

MTV News/Gil Kaufman

Yup, this girl climbed a tree to snap a photo of ... herself. Not the "Fancy" rapper.