Katy Perry  showed support for Neil Patrick Harris  and his new Broadway show, Hedwig and the Angry Inch, when she visited him backstage at his musical revival in NYC on Saturday. Elsewhere, Reese Witherspoon  had a stylish Saturday running errands and Mad Men costars Elisabeth Moss  and Jon Hamm  met up for coffee in the Big Apple. Keep reading for more must-see snaps!
Jon Hamm  and Elisabeth Moss  headed out for coffee in NYC on Saturday.
Lea Michele  and Darren Criss met up with Ryan Murphy at Friday's Taste For a Cure gala in LA.
On Saturday, Reese Witherspoon  ran errands around Santa Monica.
Rosie Huntington-Whiteley and Jason Statham had a date night in London on Saturday.
On Friday, Joel McHale and Alyson Hannigan chatted at the Taste For a Cure gala in LA.
On Friday, Gwen Stefani  ran errands around LA.
In NYC, Emma Roberts grabbed an iced coffee on Friday.
Hilary Duff  visited a coffee shop in West Hollywood on Friday.
Katy Perry  visited Neil Patrick Harris  backstage at Hedwig and the Angry Inch on Broadway on Saturday.
Reese Witherspoon  made a Friday stop by the gym in Brentwood in LA.