The proud mum posted a picture of Harvey, and his school friends, alongside the caption: “So proud of my Harvey tonight playing the piano at Royal Festival Hall #proudmum [sic].''

She later tweeted: ''Harvey is absolutely amazing love him so much [sic].''

Katie Price cosies up to the Duchess of Cornwall and Kieran Hayler at the races!

The 36-year-old mum-of-five, who had Harvey, 12, with former footballer, Dwight Yorke, boasted about his love of music - and revealed that his favourite song is Adele’s Skyfall.

Harvey and his mum also appeared in a sweet interview on This Morning on Friday.

Katie spoke about raising Harvey and how it can be difficult at times due to his ‘unpredictable’ behaviour.

Katie Price: ‘I’m so glad Jane Pountney’s life is ruined – I’ve never blamed Kieran’

Harvey has Prader-Willi syndrome, is on the autism spectrum and suffers from developmental problem including limited sight and a chronic feeling of hunger, because of the condition.

Katie said: “Harvey is hard work. [He has Prader-Willi syndrome, which makes him constantly hungry.] It does affect his behaviour because everything is about food.

“Kieran’s so good with him. It’s just me and Kieran who [care for] him.”

Katie also has Princess, nine, and Junior, seven, with ex Peter Andre and Jett, 19 months, and Bunny, six months, with her husband Kieran Hayler.