Andie MacDowell expressed her displeasure on Twitter at having been downgraded to "tourist" class from first class - the seat she paid for - while on an American Airlines flight.

"@AmericanAir HELP I paid for first class & they put me in tourist because of my dog that I pre-booked & paid for," the 57-year-old actress tweeted and accompanied it with a photo with her fellow passengers.

MacDowell also shared how she came across "the rudest person I have ever had to deal with" as she was checking in for her flight in Charlotte, N.C.

"I was checked 1a when I left LA they told me they would reassigned me Charlotte first class he did not want to help," she said, explaining that she simply wanted to be reimbursed for the second part of her trip. American Airlines' policy on pets state that up to seven pets (excluding service animals) can only be brought up on domestic flights as a "carry-on" in the cabin as long as they meet the age, size and health requirements. Additionally, these pets must be placed in its carrier and underneath the seats in front of its owners during the course of the flight, according to E! Online.

The actress explained that she and her seven-pound rescue dog were moved because the pet "couldn't go under." While MacDowell revealed that her dog was "really relaxed and surrounded by sweet people," it wasn't enough to spare her from the bashing from social media users.

She defended herself from the criticism by tweeting: "I'm very happy flying in coach I'm happy on a bus or the subway but if I play for first class, that's where I want to be, that was the point."

MacDowell concluded her rant by urging people to move on.

See all her tweets below: