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9 June 2012, 22:02 | Updated: 9 June 2012, 22:07
The 'Price Tag' star delighted fans at Wembley Stadium in London.
Jessie J touched the crowd with a heartfelt speech as she returned to the Capital FM Summertime Ball in London tonight (9th June).
"How you doing?" Jessie screamed as she bounced on to stage in front of a delirious 80,000-strong crowd at Wembley Stadium.
For her storming opening track 'Do it Like a Dude', she mixed Jay Z and Kanye West's smash hit 'Paris' in the background, as the Essex singer jumped up and down on the spot.
Sporting a wavy black bob, the effervescent singer was in fine form for her five-song set.
She then brought on some special guests for her emotional performance. The high-spirited Rizzle Kicks ran on stage to join Jessie for the rap verse of her 2011 smash hit single 'Price Tag'.
As the 'Mama do the Hump' duo left the Wembley stage, Jessie shouted "Rizzle Kicks in the building!"
The Brit-school graduate went on to talk about her horrific injury she experienced at last year's Capital FM Summertime Ball during the soundcheck, forcing her to wear a cast for months and pull out of many festival appearances.
"A small part of me is just praying I don't fall over or fall off anything, because it's amazing to be at the Summertime Ball and be able to run around in front of you guys. There are stairs, though. They might scare me; they're a little slippery."
The 24-year-old took no chances this evening on the massive Wembley Arena stage, wearing flat trainers so she could jump around just as much the screaming crowd were.
She also wore fierce looking spiked leather shorts, a matching cropped jacket and a black Boy London T-shirt - a label that the style conscious singer often wears.
She took off the bang on-trend jacket for a moving rendition of 'Who Are You', saying: "This is when things get a bit awkward, but I love a slow song".
The singer, known for expressing her emotions on stage, gave a heart-rending speech about her tough childhood experiences of being bullied.
"I see a lot of young people in here, but sometimes it needs somebody to tell them that its going to be alright," she said.
"I've been there when you don't always fit in, but don't dilute yourself. Every single day, just reach for your dreams. I know it's cheesy but it's the truth."
The moving speech touched everybody in the crowd in only a way that only Jessie can. But it wasn't long before she got the crowd back in a spirited party mood.
"Right, now I've got the emotional stuff out the way, who out there is ready for a boogie? Who says boogie anymore? Just me then."
The captivated fans might not say it, but they sure knew how to do it, as the crowd went wild for 'LaserLight'.
As the lasers shone out from the stage during the climax of 'LaserLight', Jessie gave her heartfelt thanks to the fans she calls her Heartbeats, saying: "Each and every one of you took my breath away."
As she launched into the final track of her energetic set 'Domino', Jessie made sure everyone was having the time of their lives:"I want everyone in the back to put their hands in the air."
She then prowled to the front of the stage, saying: "I want you to grab the person next to you, even if you don't know them, and dance – dance like you've never danced before."
As sparkling confetti rained down on the end of her emotion-packed set, Jessie had one final turn at getting the crowd riled up as she shouted: "We need to wake up Wembley."
She then put the icing on the Jessie J-shaped cake as she sang her heart out on the final word 'Domino.'
Jessie J's setlist was:
'Do It Like A Dude'
'Price Tag'
'Who You Are'
'LaserLight'
'Domino'
Capital FM is coming live from the Summertime Ball at London's Wembley Stadium on 9th June.
Keep your eye on the ball by heading to our Summertime Ball area for all the latest news, photo galleries and interviews from this year's event.
Don't forget that you can also follow the action as it happens by following Capital FM on Twitter and liking us on Facebook .