Whitney Houston was almost kicked off a Delta Airlines flight when she refused to fasten her seatbelt. That certainly does not sound like the behavior of an adult in her senses, and she says she was not under the influence of drugs.

TMZ quoted multiple resources as saying that Houston boarded a flight in Atlanta on Wednesday afternoon and when she settled into her seat, a stewardess asked her to buckle up her seat belt.

The report says Houston refused and got diva on the crew member until another crew member interrupted and warned her that she would have to get off the plane if she didn't fasten her seat belt.

The singer eventually allowed one of the crew members to buckle and fasten the seatbelt for her and only then was the plane cleared for a takeoff.

The report also quoted a source very close to the singer saying that she overreacted after missing an earlier flight but she's still 100 percent sober and was on her way to Detroit for her first day of shooting a new movie.

The episode seems a little ridiculous coming from one of the best-selling music artists in the world, holding a record of 415 career awards as of last year. But then recent reports suggest that inflight celebrity behavior has not been at its best in the recent past. This is the third incident in less than two months of a celebrity behaving badly on a flight. Recently, French actor Gerard Depardieu urinated on the floor of an airplane -- while passengers looked on -- after a skirmish with a flight attendant.

Qantas cabin staff had to order Justin Bieber and one of his security guards to take their seats after they started walking around in the plane as it began taxiing at Sydney airport.

Also, Green Day rocker Billie Joe Armstrong was infamously booted from his flight over the weekend because his pants were too saggy, according to reports.