Taylor Swift
The singer is obsessed with the number 13 and incorporates it in her life and career. She was even born on December 13, 1989.
"Every time I've won an award I've been seated in either the 13th seat, the 13th row, the 13th section or row M, which is the 13th letter," she told MTV in 2009. "Basically whenever a 13 comes up in my life, it’s a good thing."
Megan Fox
The actress said on Conan in 2009 that she deals with her fear of flying by listening to Britney Spears music, saying, "I know for a fact it's not in my destiny to die listening to a Britney Spears album, so I always put that on in my [headphones] when I'm flying because I know it won't crash if I've got Britney on."
Heidi Klum
The supermodel and Project Runway host travels with a bag of her own baby teeth for good luck.
"We don’t have a tooth fairy [in Germany] so I put them in a little bag," she explained during a 1998 appearance on The Tonight Show with Jay Leno. "It’s just a crazy thing that I do."
Victoria Beckham
"I'm a very spiritual person. I travel with my crystals. I've got all different colors. It's just something that I'm into," the fashion designer and Spice Girls singer told Us Weekly in 2011. "I am quite a superstitious person. I don't walk under a ladder. If I see a magpie, I salute."
Serena Williams
Before her retirement, the tennis star would bring shower sandals to the court, tie her shoelaces a specific way, wear the same pair of socks during a tournament run and bounce the ball exactly five times before her first serve and twice before her second, according to Men's Fitness.
Kit Harington
"I have a few kind of lucky mascots," Game of Thrones' Jon Snow told Condé Nast Traveler in 2012. "I've got a lucky pen—it's one I've had since I was a kid, and I carry it everywhere. And I haven't lost it yet, I've lost everything else. I'm kind of OCD, actually. Every time I get on a plane I have to touch the outside of the plane three times before I get in."
Jennifer Aniston
"If I walk on to an airplane, I always have to go on with my right foot first and tap the outside of the plane," she once told The Insider. "I have always done it for luck."
Chris Martin
"For me, there are about 18 things I have to do before I can go out to perform—most of them are too ridiculous to repeat," the Coldplay frontman told the Melbourne Herald Sun. "One is I have to brush my teeth before I go on stage, otherwise I just don't feel smart."
Cameron Diaz
"I knock on wood all day long...constantly," the actress told Cosmopolitan in 2000. "But I've also flown on Friday the 13th in a storm with a black cat on my lap, so I'm not that superstitious."
Emma Roberts
"Don't walk under ladders," InStyle quoted the actress as saying. "My mom just walked under one yesterday and I was like, 'Oh my god, I can't believe you just did that!' I've never walked under a ladder, ever."

