"Mind if I cry...brb."

Dua Lipa has opened up on the “crazy” experience of headlining her first major European festival.

The ‘New Rules’ singer took top billing at Budapest’s Sziget Festival over the weekend, performing to a crowd of over 50,000 people.

“OH MY GOD!!! TONIGHT I HEADLINED THE MAINSTAGE AND IT WAS CRAZY!! Mind if I cry… brb”, the singer wrote on Twitter.

Her fans were also seemingly in awe of the achievement – having released her debut album only a year ago.

“Dua really did THAT in just over two years !!! that’s insane i’m so proud”, one fan account wrote – sharing pictures of two very different sized crowds.

Praise also came from Troye Sivan, who described the achievement as “fucking bonkers”.

The singer recently confirmed that she has started work on the follow-up to her debut – and she’s working with renowned producer Max Martin.

Speaking to Rolling Stone, Lipa said: “Whenever I have a couple days free I go to the studio,” she said. “It also kind of helps me to get away from tour life and all the travelling and stuff, it makes me feel really grounded.”

Of Swedish producer and hitmaker Martin, who was worked with the likes of Taylor Swift, Katy Perry, and Adele, the singer said: “His attention to detail and the way he writes songs, there is a kind of theory to the pop and the way I write songs is very spontaneous. It was interesting to work and learn from someone who is so amazing and so inspiring that’s done this for many, many years.” She added she may work more with Martin on material for her second album.