The fashion blunder earned the 22-year-old beauty a strong rebuke from officials who questioned her inappropriate wardrobe choices during last week's events, FOXNews.com reported.
"Colombia had to be spoken to and told she needed to wear underpants as what she was doing was totally inappropriate," a source told the website.

Paula Shugart, president of the Miss Universe Organisation (MUO), said she was floored when she heard the news from her team.
"There were several girls in short dresses which is a little concerning, but then I saw [Robayo's] picture on the front page of one of the local papers and was very, very surprised," Paula Shugart, the president of the Miss Universe Organization, tells FOX411. "One of our PR people spoke to her and apparently she said she was wearing underwear."

"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," Shugart says.
[via - zap2it.com]