Hollywood's master pranksters: Emma Watson, Rihanna, and more

The world of Hollywood is known for its glitz and glamour but behind the scenes celebrities often let loose and have a good time.

One way they do this by playing pranks on their co-stars as these pranks can range from harmless and funny to elaborate and outrageous.

From filling a co-star’s trailer with balloons to replacing someone’s script with a fake one.

Let’s take a look at some of the most memorable pranks pulled off by celebrities on their co-stars.

Brad Pitt vs George Clooney

Brad Pitt and George Clooney are two of Hollywood’s biggest stars known for their clever pranks but when they play pranks on each other, things get really creative.

George once put funny bumper stickers on Brad’s car, like “small Penis on Board.” The Wolfs actor even made fake stationery with Brad’s name and sent silly letters to Meryl Streep.

Brad retaliated by taking out ads praising George as the “Sexiest Man Alive.” The Troy star also tricked Italian film crew members into calling George “Mr. Ocean” and avoiding eye contact with him.

This ongoing prank war between the two friends is legendary and it is fun to see who will come up with the next clever trick.

Emma Watson pranks SMOSH’s co-host

Emma Watson is an incredibly talented actress and she is also a dedicated humanitarian. But what really stands out about her is her ability to handle unexpected situations with grace.

In a funny prank interview with SMOSH, the Beauty and the Beast actress was brought out to surprise Joven, the co-host who has a crush on her. Joven was initially set up to interview Logan Lerman but instead, Emma walked out.

Despite being caught off guard the Little Women star handled the situation with humor and kindness. When Joven showed her his “I (heart) Emma” tattoo, she even called it “cute” instead of reacting negatively.

Rihanna pranks Jimmy Kimmel

Jimmy Kimmel is known for his hilarious pranks but this time, Rihanna turned the tables on him as the singer snuck into Jimmy’s bedroom at 1 a.m. and surprised him with a live concert.

With the help of Jimmy’s own talk show crew, the Work songstress performed her hit song Bitch Better Have My Money with a light show and confetti.

Rihanna playfully tortured Jimmy hitting him with pillows and shining bright lights in his face, waking him up from his sleep. Jimmy’s reaction was priceless and he took the prank like a good sport, despite letting out a few choice words.

Arnold Schwarzenegger pranks Wax Museum Goers

Arnold Schwarzenegger also known as the Governator who loves to play pranks. This time he dressed up as his famous character, the Terminator to rise money for after-school programs.

The Predator actor walked the streets of LA quoting classic Terminator to lines tourists and even had a fun showdown with an Arnold.

The part was when he pretended to be a wax statue at Madame Tussauds Wax Museum. He surprised museum visitors by suddenly coming to life and scaring them.

James Corden statue prank on David Beckham

James Corden loves to play pranks on his celebrity guests and football legend David Beckham unluckily became his target.

The Gavin and Stacey actor had a fake statue of David, made but it was not exactly pleasing it had a weirdly shaped head and a larger backside.

David was completely unaware of the prank and was surprised when he saw the statue.

At first, he seemed a bit confused but eventually he just wanted to see the statue get smashed James’ prank was a hilarious way to poke fun at David and it showed that even superstars can be good sports.