Lorde & Ellie Goulding Join Tons of Music Stars at Birthday Party

Lorde and Ellie Goulding make separate entrances into the Sunset Marquis Hotel on Wednesday (January 14) in West Hollywood, Calif.

The ladies joined a star-studded group of music celebs as they helped celebrate Kings of Leon frontman Caleb Followill‘s birthday.

PHOTOS: Check out the latest pics of Lorde

Some of the stars spotted at the event included Lorde‘s BFF Taylor Swift, Rihanna, Harry Styles, Leonardo DiCaprio, and many more.

The day before, Taylor and Lorde were spotted going on a hike together.

FYI: Ellie is wearing Hudson jeans.

20+ pictures inside of Lorde and Ellie Goulding at the party…