Happy birthday, Taylor Swift!  The superstar turns 24 on December 13, but because of global time zone differences, she actually got to celebrate her special day 24 hours early.

The singer is currently in Australia, which is 16 hours ahead of Eastern Time, so Taylor tweeted on Thursday, "It would appear that I'm now 24. That's on Australia time though. Still 23 in the States." She then posted a Vine video of a singing birthday card she'd received: it features pictures of cats, who are all singing "Meow," and it's signed "Meredith," which is the name of Taylor's cat.  "Thanks mom," wrote Taylor.

Even though it wasn't technically her birthday, Taylor still had a lot to celebrate Thursday: she received the second Golden Globe nomination of her career.  It was for "Sweeter than Fiction," the song she co-wrote with fun. guitarist Jack Antonoff for the movie One Chance, which tells the story of Britain's Got Talent winner Paul Potts.  That came less than a week after she received several Grammy nominations.