Mother Monster knows how to throw a party.
Lady Gaga arrives to her 30th birthday in a gold, '80s-inspired outfit complete with chunky belt and pouffy shoulders.
Taylor Swift arrives in a shimmering black jumpsuit.
Kate Hudson wears a long trench to cover up her plunging neckline and sheer skirt.
Lan Del Rey looks ready for spring in a light pink, floral dress.
Lorde wears a strapless little black dress with sheer tights and simple pointed-toe pumps.
One day after her baby shower, Chrissy Teigen attended in a low cut, all-black ensemble accompanied by John Legend.
Pharrell wore a black hoodie, a baseball hat, and lace up boots.
Kathy Bates wore all black everything to Lady Gaga's 30th birthday.
Kylie Minogue wore denim overalls, a patterned scarf, and sneakers.
Nick Jonas work a simple white button up and dark pants.
Model Suki Waterhouse wore a purple pantsuit with floral patterns.