Instagram is a popular photo-sharing app that is sort of like twitter, but for pictures. Even if your phone doesn't have an app you can still look up pictures from these stars online to see all the cool stuff they've been posting!

Here's the list of 15 celebrities (and their instagram user names) and some examples of why you should follow them:

Chloe Moretz (@cmoretz): She's posted tidbits from her upcoming re-make of the movie, Carrie, and crazy food she's been eating like a hamburger sandwiched between two grilled cheese sandwiches.

Some of the One Direction boys, Niall Horan (@nialler1993), Harry Styles (@harrystyles) and Louis Tomlinson (@louist91): The guys post a lot of tour photos as well as what they do when they're just chilling and relaxing.

Taylor Swift (@taylorswift): Taylor posts tons of pics of her delicious homemade pastries as well as her new kitty, Meredith.

Hailee Steinfeld (@haileesteinfeld): The young model and actress always shows off her trend-setting fashion choices, including her day-to-day looks and what she wears on the red carpet.

Justin Bieber (@justinbieber): Biebz is always posting. He mostly shows off his cool new gear and self-timed shots of himself. Selena also usually makes a cameo every once and awhile- of course.

Zooey Deschanel (@zooeydeschanel): Nail art and pies! Enough said.

Cody Simpson (@codysimpson): The Aussie pop star seems to always post shirtless pics!

Victoria Justice (@victoriajustice): She posts a lot of inspirational quotes as well as funny pics of her dog.

Emma Roberts (@emmaroberts6): Emma gives her fans a little peek into her past by posting her childhood photos. She also recently posted a pic of a huge pizza- a lot of her stuff is very funny and we love a girl who doesn't take herself too seriously.

The Pretty Little Liars, cast Ashley Benson (@itsashbenzo), Lucy Hale (@lucyhale89), Shay Mitchell (@shaym) and Ian Harding (@ianmharding): These co-stars are also pretty cose in real life, so they not only post pics of them goofing off on set but also what they do together when they're not filming.

It's nice when stars get to show their fans little glimpses into their personal lives.

Do you have an instagram account? What about twitter? Do you follow any of the celebrities on our list?

source: teen vogue