Multi-platinum selling recording artist Demi Lovato has sold out her London show within seconds of going on general sale this morning.

Demand from fans was so great that tickets for her summer show on 1st June at London’s Koko are now sold out but tickets are available here.

DEMI, the 4th album from Demi Lovato on Hollywood Records features the chart-topping, double platinum-certified single, "Heart Attack," and "Neon Lights" and is available to pre order from Monday 14th April. The album hit #1 on iTunes in 50 countries and entered the UK chart at #10. "Heart Attack" entered the UK charts at #3. The video for the song has amassed over 200 million views on VEVO.

Demi has over 17 million Facebook fans, 21 million Twitter followers and over a billion views on YouTube and VEVO.