Miss Colombia has been told off for not wearing any knickers in official appearances during the Miss Universe pageant.

22-year-old Catalina Robayo allegedly wore tiny mini-skirts with no underpants during public appearances in pageant host city, Sao Paulo, Brazil. 

A source told Fox News' Pop Tarts column: “Colombia had to be spoken to and told she needed to wear underpants as what she was doing was totally inappropriate. People have been pretty upset by it; there have been photos and media appearances where she has completely had her crotch out.”

Paula Shugart, President of the Miss Universe Organization said: “There were several girls in short dresses which is was a little concerning, but when I saw the (commando) picture on the front page of one of the local papers and was very, very surprised.

“Our supervisors talked to all of the contestants about dressing appropriately, and one of our PR people spoke to her (Robayo) and apparently she said she was wearing underwear. But regardless, it created quite a stir here for a few days.”

Meanwhile, pageant officials returned official swimsuit bikini bottoms provided by sponsor Catalina Brasil Swimwear because they were too revealing for American television.

Shugart said: “It looks like we have rectified by the issue, and the costumes were beautiful, but they sent us the first round of competition suits and being by a Brazilian designer they were definitely a lot smaller than we’re used to or most of the contestants are used to."

"We delayed our shoot so we could add material to the bottom; otherwise we were going to have serious problems on television. (The designers) were a little surprised, they knew we were a little more conservative but… they took them back and they turned out really well.”