Katy Perry and Hari Nef Partied This Week

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Photo: Getty Images; BFA; World Red Eye

Gabrielle Union and Katy Perry both had birthdays this week, and they partied accordingly. For Union, that meant blowing out birthday-cake candles in Atlanta at the screening of Almost Christmas. In Los Angeles, Perry presided over pink candles and a delicious-looking chocolate cake at the CFDA/Vogue Fashion Fund Dinner, where J.Crew designer Jenna Lyons wore floral-printed pants with classic black pumps.

In New York, Nicki Minaj and Iris Apfel partied at Fashion Group International’s Night of Stars, while Moon Juice founder Amanda Chantal Bacon celebrated the release of her cookbook. In Miami, Orange is the New Black’s Jackie Cruz and Diane Guerrero wore contrasting colors to a design party — Cruz in a white jumpsuit, Guerrero in a column black dress.

Click ahead to see party pics from the week.