Deci asta are Selena!

The 18-year-old Disney star was taken to hospital complaining of a severe headache and nausea while filming The Tonight Show with Jay Leno last week.

She underwent a number of tests as doctors tried to find out what was wrong with her.

There was still confusion surrounding Selena's mystery illness over the weekend, but the singer was looking better yesterday as she performed to a 500 strong crowd at the Santa Monica Place.

She told reporters: 'I was just very malnourished, so I was low on iron and exhausted'

The Disney singer performs to fans after saying thanking them for their support

Selena told fans she felt much better adding: 'I want to thank you so much for coming. If you guys came on Friday, I'm so sorry that I couldn't be here. I love you guys very much.'

Selena also took to Twitter to thank her fans for their concerns about her illness.

'Feeling much better, thank you all for being so understanding,' tweeted Selena.

Her spell in hospital sparked rumours that the 18-year-old could be pregnant.

Boyfriend Justin Bieber had rushed to be by Selena's side on Friday night after hearing the news that she had been taken to hospital.

Read more: http://www.metro.co.uk/showbiz/866281-selena-gomez-i-went-to-hospital-because-i-was-malnourished-and-exhausted#ixzz1PHH1VfM9