Rita kept it all blue as she performed her hits in front of over 85,000 revellers on the closing night of Scotland's annual summer festival.
The songstress, who is dating DJ Calvin Harris, flaunted her curly locks with bright blue tips and also showed off her washboard stomach in a white bra top, which was zipped down the middle.
Performing back-to-back at festivals clearly haven't left the 22-year-old feeling tired either, as she showed off her boundless energy by jumping up and down on stage.
On Friday, Rita joined Snoop Dogg on stage at London's Wireless festival, before returning on Saturday to perform her own set where she wore Lycra cycling shorts and a matching shiny patterned top and jacket. She then headed to Scotland's T In The Park for her Sunday slot.
Rita, who wore an oversized two-tone denim jacket which she teamed with baggy mismatched jeans - half stonewash, half sequined - delivered an energetic performance of her popular hits including 'R.I.P.' and 'Shine Ya Light'.
She completed her outfit with green-framed sunglasses and gold accessories. Taking to Instagram before her show, she said: "Pick a leg any leg! Showing love to my Family Ashish for sending me all this amazing Denim! #BigLove on my way to T In The Park! You ready?!!! #Scotland."
Already known for her eclectic choice of fashion, Rita recently unveiled her first modelling shots as the face of Madonna's Material Girl fashion line after joining forces with the brand last month.
Posting a photo of the enormous crowds, Rita said: "You all showed me more then I can even dream that's love and support. Look how amazing you all f***ing look!!! #TITP."
She later added: "Scotland you rocked with me today thank you! #Ashish #TITP"
Check out Rita's behind-the-scenes photos of her Material Girl fashion shoot in London.
Copyright: Material Girl