(CNN) Miss USA has apologized after comments she made about two fellow Miss Universe contestants' English-language abilities sparked backlash online.

In a live Instagram video posted on Wednesday, 24-year-old contestant Sarah Rose Summers said that Miss Vietnam H'Hen Nie is "so cute and she pretends to know so much English and then you ask her a question after having a whole conversation with her and she (nods and smiles)."

Summers, who was joined in the video by Miss Colombia, Valeria Morales and Miss Australia, Francesca Hung, was attending the Miss Universe pageant in Thailand, which is scheduled to begin on Sunday in Bangkok.

Later on in the video Summers appeared to express sympathy for Miss Cambodia, Rern Sinat, who she said, "doesn't speak any English and not a single other person speaks her language."

"Can you imagine? Francesca (Miss Australia) said that would be so isolating and I said yes and just confusing all the time," Summers said. "Poor Cambodia."