Taylor Swift teases NEW music video directed by BFF Blake Lively on Instagram

Taylor Swift - who only just released her long-awaited 10-minute long music video of All Too Well, which starred Teen Wolf actor Dylan O'Brien and Stranger Things actress Sadie Sink - made a surprise announcement on Sunday, Nov. 14 that on Monday at 10 am ET, the multi-award winning singer and anthem break-up-song-writer will be releasing a NEW music video, for one of her songs, written and directed by none other than, BFF and former Gossip Girl star, Blake Lively!

Taking to her Instagram, the 31-year-old singer shared a teaser of the music video which showed a red velvet wedding cake being torn apart by someone wearing a huge ruby ring on their middle finger, and although the teaser didn't reveal what song it could be die-hard fans knew instantly that it was "I Bet You Think About Me," with many fans expressing their excitement on Twitter, and their impatience to see the video directed by Ryan Reynold's gorgeous wife, Blake.

"i will skip class for this so @blakelively @taylorswift13 @taylornation13 you are responsible if I don’t graduate college on time," a Twitter user wrote in response to the news, with many others leaving similar messages.

Haven't seen the teaser yet? Check it out below!