Lianne La Havas performs during Lollapalooza 2013 at Grant Park on August 4, 2013 in Chicago, Illinois.
Ariel LeBeau for Fuse

It was really hot and really sunny when Lianne La Havas took the Lake Shore stage during the last day of Lollapalooza early Sunday afternoon. Lovers were laid out under shade far from the stage, and fans who couldn't wait to catch the English soul/folk singer's Lolla debut staked out the front row for her entire 50-minute set. "Hey Chicago, I love you," Lianne gratefully told the audience. Chicago loved her, too.

Decked in a killer bedazzled third eye shirt and floral pants that only she (and your grandma's hippest friend) could pull off, Lianne introduced herself to a mostly American audience with an assorted sample of her back catalog. Switching guitars like a pro (one being a Fender Stratocaster—props), Lianne volleyed between slow jams like "No Room for Doubt" and "Au Cinema" to more uptempo tracks like "Forget" and a cover of Stevie Wonder's "Master Blaster (Jammin')."

The standout moment of the set, though, had to be her left field cover of Radiohead's "Weird Fishes/Arpeggi." True fans would know that Lianne has covered the In Rainbows track previously, but the seemingly random song selection automatically garnered La Havas a brand new fan base—mostly guys dressed in Bonnaroo jerseys and white socks (at the same time... shudder) who were dragged to Lianne's set by their girlfriends. "Oh sh-it, really?" one man yelled as soon as the song broke out. Yeah, really.

La Havas ended her set with the title track from her critically acclaimed 2012 album Is Your Love Big Enough? which made its way to No. 4 on the U.K. Albums chart soon after its release.

Check out our new girl crush Lianne La Havas on the rest of her festival circuit this summer or during one of three dates she has scheduled in Asia this September.

Check out all the best photos from day 3 of Lollapalooza: