Go Inside Lady Gaga's Star-Studded Birthday Bash!

Lady Gaga turns 30 years old on Monday, and to celebrate the major milestone, the singer had a star-studded birthday bash at the No Name club in LA on Saturday night. In addition to Lady Gaga's fiancé, Taylor Kinney, stepping out, Taylor Swift, Lorde, Nick Jonas, Lana Del Rey, and Kate Hudson all made stunning appearances at the big event. Kate even took to Instagram to share a sexy mirror selfie before the party, writing, "#repost @sophielopez #Dejavu #Saturday #LetsGoCelebrateALadiesBDay."

Lady Gaga, who recently returned from Park City, UT, has been busy planning her upcoming nuptials to Taylor. Earlier this month, she revealed her wedding will be low-key and more of a "family-style" wedding, jokingly telling Ryan Seacrest, "We are not planning anything that is worth writing about." Keep reading to see more of Lady Gaga's special night, and then check out her sweetest moments with Taylor.