Recently Taylor Swift’s celebrity posse has been a source of media frenzy.

Last week the singer was spotted with Hailee Steinfeld at the premiere of the actress’s latest film, “Romeo and Juliet.” According to Steinfeld, the two met three years ago thanks to mutual (and also famous) friend, Miss Emma Stone.

Swift told Ryan Seacrest a few months ago that she has "15 best friends,” so here’s a list of some famous faces that have been spotted out and about with the singer!

Demi Lovato

Swift and Demi Lovato were spotted shopping together a few days ago in Beverly Hills, causing a bit of a stir due to media rumors that the two had been in a feud and were throwing shade at each other.

Even so, the “Heart Attack” singer has been pictured with Swift on the red carpet multiple times, so we’re guessing that they are in fact friends.

Katy Perry

Despite recent rumors that Swift is not pleased with the supposed similarities between Sara Bareilles’ “Brave” and Katy Perry’s “Roar,” Swift was pretty close to Perry once upon a time.

The two have been spotted hanging out before and Swift once surprised her fans when she brought Perry onstage to perform the singer’s hit “Hot N Cold.”

Selena Gomez

One of Swift’s most well-known besties is Selena Gomez, another former Disney star and a friend of Lovato’s as well.

Swift and Gomez are often seen hanging out together— whether at award shows or just out and about in Hollywood.

When these two aren’t together, they’re either tweeting to or talking about each other.

Seriously, it’s like they can’t get enough of each other! 

Colbie Caillat

Swift famously collabed with Colbie Caillat on the hit song “Breathe” and we all know that she pretty much only collabs with her close friends, right?

The “I Knew You Were Trouble” singer has also covered one of Caillat’s songs (“Realize”) while on tour.

Ellen DeGeneres

Ellen DeGeneres is a BIG fan of Taylor Swift. Like REALLY big.

Swift has been on “The Ellen Show”—both as a performer and as an interviewee—a whopping 9 times since her first appearance in 2008.

Kellie Pickler

Swift and Kellie Pickler first met while touring with Brad Paisley and later worked together on Pickler’s 2008 single “Best Days of Your Life.” 

Swift also appeared in the music video and has performed with the “American Idol” alum on tour before. Pickler has even called the singer her “little sister.”

Dianna Agron

Swift and former “Glee” actress Dianna Agron are also close friends, often seen finding ways to spend some time together, even though it appears that being friends with the singer is never easy.

Agron is yet another celeb friend that the media has “caught” throwing some shade at the singer. This time, the actress supposedly rolled her eyes at Swift and Sarah Hyland, the star of “Modern Family,” in a Vine of the three enjoying a Fun. concert.

Reach Staff Reporter Michelle Tiu here or follow her on Twitter.