Ellie Goulding was back on top form at Chicago's Lollapalooza Festival on Sunday night (31Jul16).

The 29-year-old singer has been out of the spotlight for several weeks after being told by doctors that she is suffering from exhaustion.

But Burn singer Ellie delighted fans as she performed during the fourth day of the music festival in Grant Park in the city on Sunday, as part of her Delirium World Tour.

The blonde beauty looked stunning in a black tabard style dress with cut outs at the side, over a pair of tiny black, glittery shorts. Boasting a golden tan thanks to her recent trip to St Tropez, where she has been recovering after being signed off work by medical professionals, Ellie beamed with delight as she bounded around the stage. As well as singing her famous tracks, Ellie also showed off her rhythm as she pounded on a drum kit.

Following the performance, Ellie shared a snap of herself on stage on her Instagram page, writing: "I know people use this world for so many differed reasons... But I am BLESS-ED. What a night @lollapalooza."

"Best show of the year damn @lollapalooza," she added on Twitter.

Ellie pulled out of the Positivus Festival in Latvia on 15 July (16), followed by Finland's Ilosaarirock Festival on 16 July. She didn't mention what was wrong at the time, but later revealed to Britain's Evening Standard newspaper she canceled on doctor's orders.

"I’m a hard worker. I don’t cancel anything unless I really need to, but my doctor said, ‘Ellie, your voice is going to burn out’. Glastonbury was the point where I realized I was pretty exhausted. It’s all good though - I’m feeling really positive about the rest of the year," she told the British newspaper.