Lady Gaga [1] turns 30 years old on Monday, and to celebrate the major milestone, the singer [2] 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 [3], Lorde [4], Nick Jonas [5], Lana Del Rey [6], and Kate Hudson [7] 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 [8], has been busy planning her upcoming nuptials to Taylor. Earlier this month, she revealed her wedding will be low-key [9] and more of a "family-style" wedding, jokingly telling Ryan Seacrest [10], "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 [11].