Taylor Swift's 'Red' Tour: The Biggest, Best, Most Star-Studded Slumber Party EVER! (VIDEOS)

Check out our favorite guest star moments during Taylor Swift's Red Tour!

Check out the faves-on-faves AH-MAY-ZINGNESS that was Taylor Swift's "Red" Tour.

After six months and 63 shows, Taylor Swift's "Red" Tour finally closed out its North American leg. (Shout-out to Oceania! Tay-Tay's heading your way in November.) Hearing those sweet, somber swan songs and razor-in-the-cupcake kiss-off tracks in full blast was incredible! But, honestly? That wasn't even our favorite part.

That honor would have to go to the fact that the entire exercise was possibly just a means for the "I Knew You Were Trouble" singer to duet karaoke songs with all of her faves. Carly Simon, Jennifer Lopez, Hunter Hayes, Cher Lloyd, and more turned up to get their Tay-Tay on, much like we are ALL about to right now! COME, let us revisit the glory and the splendor that was Taylor Swift's stadium-size karaoke slumber party -- er, the "Red" Tour.

1.) JENNIFER LOPEZ, "JENNY FROM THE BLOCK": Performing at L.A.'s Staples Center, Tay-Tay described J. Lo's classic as her "hairbrush song" (as in, the song Taylor would sing into her hairbrush alone in her room when she was younger).

Check out our favorite guest star moments during Taylor Swift's Red Tour!

+ Watch TAYLOR SWIFT + JENNIFER LOPEZ PERFORM "JENNY FROM THE BLOCK" LIVE IN LOS ANGELES.

http://www.youtube.com/watch?v=M8EdlRIpD98

Watch more surprise guest highlights from Taylor Swift's "Red" Tour after the jump.

2.) CARLY SIMON, "YOU'RE SO VAIN": Seeing Carly join Taylor on stage for an iconic song that is, like, the REASON we have songs like "We Are Never Ever Getting Back Together" is amazing and inspiring. Knowing that Carly revealed who "You're So Vain" is about to Tay-Tay before swearing her to secrecy is frustrating and envy-inspiring. It's all about balance.

Check out our favorite guest star moments during Taylor Swift's Red Tour!

+ Watch TAYLOR SWIFT + CARLY SIMON PERFORM "YOU'RE SO VAIN" LIVE IN FOXBOROUGH, MASS.

Check out our favorite guest star moments during Taylor Swift's Red Tour!

3.) CHER LLOYD, "WANT U BACK": Another Staples Center duet, this cameo spotlights two of our favorite motions ever performed by a human being: the "I Wish" singer's "URNGGH!" two-handed pelvic thrust, and Taylor's "UGH, AS IF!" high-pony brush-off.

+ Watch TAYLOR SWIFT + CHER LLOYD PERFORM "WANT U BACK" LIVE IN LOS ANGELES.

Check out our favorite guest star moments during Taylor Swift's Red Tour!

3.) HUNTER HAYES, "I WANT CRAZY": On Sept. 21 (aka last Saturday), Taylor closed out the final Red Tour show with a surprise duet with Hunter Hayes on his hit song "I Want Crazy." Basically, I want whatever the hell is happening on stage because it is MAGIC.

+ Watch TAYLOR SWIFT + HUNTER HAYES PERFORM "I WANT CRAZY" LIVE IN NASHVILLE.

http://www.youtube.com/watch?v=WylUbFcLNEY

Check out our favorite guest star moments during Taylor Swift's Red Tour!

5.) TEGAN AND SARA, "CLOSER": Obviously nothing Tegan and Sara-related will ever be cuter than that all-dog "Closer" cover video, but this tag team with Taylor -- especially when they sing "I won't treat you like you're oh so typi-caaaaaaal!" [emphasis OURS] -- makes for a pretty respectable runner-up.

+ Watch TAYLOR SWIFT + TEGAN AND SARA PERFORM "CLOSER" LIVE IN LOS ANGELES.

http://www.youtube.com/watch?v=rgeAjfDHCtY

Check out our favorite guest star moments during Taylor Swift's Red Tour!

6.) SARA BAREILLES, "BRAVE": We love everything about this, especially when Tay indicates that a typical way to show love is to "hold up anything shiny, or glittery, or light-up that you have." The only part we take umbrage with is when Taylor says "I listen to it every single time I have a bad self-esteem day, which is a lot" -- because GIRL.

+ Watch TAYLOR SWIFT + SARA BAREILLES PERFORM "BRAVE" LIVE IN LOS ANGELES.

http://www.youtube.com/watch?v=x4k9ODlsNYI

Check out our favorite guest star moments during Taylor Swift's Red Tour!

7.) ELLIE GOULDING, "ANYTHING COULD HAPPEN": If this third Staples Center moment, nay, if the entire "Red" Tour proves anything, it's that anything truly could happen -- at least when you're in the same room as Taylor Swift and her magical, candelabra-laden stairway of dreams and wishes.

+ Watch TAYLOR SWIFT + ELLIE GOULDING PERFORM "ANYTHING COULD HAPPEN" LIVE IN LOS ANGELES.

http://www.youtube.com/watch?v=rFRwaY6-9J4

Photo credit: Getty Images