The 35-year-old singer claimed on Twitter on Thursday that she was asked to remove her shirt because the flight attendant "didn't like my shirt."
& # 39; Day tweeted: "I never flew and the butler treated me like a lil child punished all the time for the flight. From the inside out to fly".
American Airlines told Fox News: "We are looking into the situation and contacting O Day for more information."
Singer Aubrey O'day arrives at the House of CB Los Angeles on June 14, 2016 in Los Angeles, California.
(Michael Bezjian / WireImage)
Day gave no details about the stewardess's shirt.
"I was shocked. I literally had to put my breasts in a bra in front of everyone around me not to get kicked out. The girl next to me lifted the blanket because she felt bad," she tweeted.
She added in a follow-up tweet, "I'm so offended and upset."