Melanie C and Pixie Lott will take to the stage this summer in honour of the late presenter Caroline Flack.  

They will be raising money for several mental health charities at Flackstock, which is being held for the fourth time on August 8 at Crystal Palace Bowl.

The Spice Girl, 51, is set to close the event with a DJ set while singer Pixie, 34, will perform once again at the event. 

They are part of a star-studded lineup that includes Love Island alumni Wes Nelson, who will be performing with drag queen Carrie-Oke in the Neptune's Choir. 

Boyzone legends Brian McFadden and Keith Duffy will also be on stage, performing for the first time as part of Boyzlife. 

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Alife Boe is also set to headline the event, which is described as being a family-friendly day out with more acts still to be announced. 

Caroline tragically died by suicide in February 2020 after reaching new heights as a presenter in the proceeding years as the face of Love Island. 

Flackfest was established in a bid to raise awareness of mental health issues by the late star's friends and family. 

It aids four causes said to be close to Caroline's heart - Choose Love, Mind, Samaritans and Charlie Waller Trust.  

News of this year's lineup comes after Olly Murs got emotional after playing at the memorial festival last year. 

Following his set, Olly took to his Instagram stories to talk about the event following an emotional day remembering his close friend. 

Choking back tears, Olly said: 'Wow, what a night tonight, I just wanted to come on here and say thank you to everyone that came to Flackstock.'

'It was an emotional one tonight, the weirdest feeling this gig tonight, I've never had a feeling like it in all the years I've been performing. 

'This is Caroline's festival it's in her name it's for her and her family and all the incredible charities.' 

Olly added: 'I was very emotional going into it but I just think that you guys pulled through for me - the fans were incredible tonight, thank you for the love, the support- you guys singing.'

Olly and Caroline had close friendship and previously presented the X Factor spin-off show, the Xtra Factor, together for two series between 2011 and 2013.

Ahead of the performance, Olly shared throwback videos of himself working with Caroline over the years.

Alongside the videos, he wrote: 'Been reminiscing a lot these last few weeks knowing Flackstock is today! Caz loved singing, we did it so much, didn't always capture those moments on camera but I did capture them as memories which I'll never forget.

'So I thought I'd put some of these clips on here that I found of her beautiful voice! She sang more than me when I was around her.'