Selena Gomez turns 33 on Tuesday, July 22, but she gathered up her crew a couple of days early for a weekend bash that appeared to include a balloon pit, some dancing and an amazing Los Angeles rooftop view. Oh yeah, and a Taylor Swift cameo. Check out her Instagram photo dump:

Sources told Rob Shuter’s #ShuterScoop that Blake Lively was deliberately cut from the guest list for Gomez’s all-out, sequins-and-satin 33rd bash. “This wasn’t some innocent oversight,” one insider said. “It was personal.” And that personal reason? Taylor Swift.

The besties were seen posing together in a pool of balloons in a carousel shared by Gomez via Instagram Sunday.

Blake Lively was allegedly excluded from Selena Gomez's 33rd birthday celebration by Taylor Swift, who found Lively's ongoing legal troubles with co-star Justin Baldoni unacceptable.