A lot of times, celebrities give us the impression that they are very polished, rehearsed, and they don't make mistakes on-camera.
But sometimes, one specific piece of technology can really mess celebrities up: The teleprompter. The script-feeding device is sometimes harder to read from than it looks.
At the Billboard Music Awards on Sunday, Kendall Jenner had a tough time reading her lines while introducing the band 5 Seconds to Fame.
She actually started off sounding pretty good, but a couple of lines in, she really lost her direction. It sounds like she started to introduce the band One Direction, instead of the correct boy band.
So she started giggling, and bent over, ducking out of the shot. Then she stood up, telling the audience, "Guys, I'm the worst reader." After the flub, she took to Twitter to express her embarrassment.
Despite her explanation on Twitter, many others circulated tweets mocking her.
This wasn't the first time a celebrity lost his or her composure to the prompter. Here are some of the biggest fails in famous teleprompter readings.
1. John Travolta - "Adele Dazeem"
Earlier this year, John Travolta butchered Idina Menzel's name onstage during the Oscar's. He got her name very wrong, as he read out, "Adele Dazeem."
The explanation for his mess-up came on Twitter as well.
John Travolta's #AdeleDazeem statement: "I've been beating myself up all day. Then I thought...what would Idina Menzel say..." (1/2)— Amy Kaufman (@AmyKinLA) March 4, 2014
"She'd say, Let it go, let it go! Idina is incredibly talented and I am so happy Frozen took home two Oscars Sunday night!'" (2/2)— Amy Kaufman (@AmyKinLA) March 4, 2014
2. Michael Bay - teleprompter tears
At the 2014 International Consumer Electronics Show in Las Vegas, director Michael Bay froze up when his teleprompter failed. Instead of improvising, he just gave up, and left the stage in silence, with tears in his eyes.
He took to his blog afterwards, saying:
"Wow! I just embarrassed myself at CES... the teleprompter got lost. The prompter went up and down - then I walked off... I guess live shows aren't my thing."
3. Paul Rudd and Salma Hayek - Golden silence
During last year's Golden Globes, Paul Rudd and Salma Hayek had nothing to say when their teleprompter shut off in the middle of their bit. They did the best they could to ad-lib through it, but needless to say, it was a bit awkward.
And even practiced television anchors can't get it right every time. This montage of Reverend Al Sharpton proves that very well.
Clearly, man will be fighting against the teleprompter until the end of time... Watch out, celebrities!
What is your favorite teleprompter fail? Let us know in the comments below.