Taylor Swift is celebrating her 27th birthday with lots of messages from her friends. Karlie Kloss was the first to wish her "partner in crime" a happy birthday with a sweet Polaroid. Martha Hunt followed that up with a loving tribute to their dance parties. Gigi Hadid called Swift an "inspiration," in her birthday tribute.But, there's one Swift squad member that is surprisingly missing from this round-up: Selena Gomez.Now, before we jump to conclusions on what this may mean, let's remember that Gomez has been taking a break from social media. She hasn't tweeted anything since August, when she announced that she would be taking time off to focus on her health On Thanksgiving, Gomez posted a photo on Instagram — her first in months — thanking her fans for always being there for her. "My year has been the hardest yet most rewarding one yet," she wrote. It's also been a year where as of late she's been quiet on social media, which means she may forgo a message to one of her besties.The friends haven't been seen together a lot as of late, but that doesn't mean there's a rift between them. Just last month, Swift posted a video to Instagram that had her absolutely freaking out over Selena Gomez's win at the American Music Awards. Seriously, she couldn't stop screaming in excitement.Also, Gomez hasn't posted a birthday wish yet, meaning she could be following Swift's lead. Back in July, it seemed like no one was wishing Gomez happy birthday , that is, until Swift did at the last minute with a throwback post Of course, this is all to assume that Gomez would publicly wish Swift a happy birthday, when in fact, she could have already wished her a private one. It's possible that Gomez just called or texted her bestie to tell her how much she cares. We'd like to think it's a message full of cat emoji.