The "Gossip Girl" alum took to Instagram on Monday to share a special tribute to her new friend, Taylor Swift.
Lively posted a photo from her Australian get-together with the singer and a special message for the beloved pop star in celebration of the her 25th birthday.
"There's a reason '#friendshipgoals' was invented because of her. Thank you @taylorswift for the happiness you bring to not only everyone that knows you, but also to those who don't --you're the real deal. Happy Birthday!" she posted with a candid black-and-white shot of the duo riding a roller coaster together.
But Blake's birthday wishes didn't stop there -- the mother-of-one also sent Swift a super sweet custom pie.
Taylor took to her Instagram account to gush about the adorable gift on Monday as well.
"Blake wins at birthday pies. @blakelively I honestly can't stop laughing rn," the 25-year-old shared with a photo of a pie with two cat cake-toppers.
It definitely looks like the "Blank Space" singer has had one hell of a birthday! Taylor also celebrated with beau Calvin Harris at a party thrown for her by Apple exec Jimmy Iovine in Malibu on Sunday.
What do you think about Blake's sweet gesture? Sound off below and check out the gallery above to see more of Swift's best candid photos!