The 'Skyscraper' singer was greeted by adoring Lovatics on Wednesday evening (28 May) when she returned to her hotel following a busy day of work.
Demi waved and smiled at her admirers before heading inside for some well-deserved rest.
The brunette looked gorgeous in an all-black ensemble and carried a to-die-for Hermes Birkin bag which we so want.
Demi's over in the UK fresh from a performance on the American Idol finale in the US, where she sang 'Really Don't Care' and joined the female finalists for a rendition of 'Neon Lights'.
She's over here for a special performance at Koko in London on 1 June.
And to make a mystery announcement...
A countdown on Demi's website and Twitter account teases fans that something will be revealed today at 6pm. Intriguing!
Meanwhile, the gorgeous star has been included in the 2014 Maxim Hot List. "Sexiness stems from being confident and comfortable in your own skin," she told the magazine, adding that her bum is her best feature!
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Watch Demi's music video for 'Neon Lights' below: