Taylor Swift celebrates Katy Perry’s 25th birthday at Sunset Beach in Los Angeles on Saturday (October 24).

Taylor tweeted about the event, saying:

http://twitter.com/taylorswift13/status/5142766424

@Katyperry knows how to throw a birthday party! I would even go as far as to say it was party-licious. Best EVER. Happy bday, pretty girl!!

Taylor Swift at Katy Perry Birthday Party