The stars jetted around the globe this week, with Paris Fashion Week attracting celebrities over to Europe and the end of award season freeing up others to get back to business. Kate Middleton attended a wedding  in the Swiss Alps, while Kate Moss  returned to the runway during the Louis Vuitton  show in the City of Light. Cameron Diaz  went on a girls' vacation with Reese Witherspoon  and Drew Barrymore , and Brad Pitt  did some traveling on his own.
There was plenty more celebrity fun this week — click through the rest of the exciting shots!
Kate Middleton and Prince William attended a friend's wedding  in the Swiss Alps with Prince Harry.
Cameron Diaz hit the beach  in Mexico with Reese Witherspoon  and Drew Barrymore .
Brad Pitt went furniture shopping in Paris  after news broke that his and Angelina Jolie 's wine, Miraval, sold out of its first batch in just five hours.
Jennifer Garner shopped with Samuel , who has started walking, in LA.
Kristen Stewart, Taylor Lautner, and Katy Perry's assistant, Tamra Natisin , caught a Marcus Foster concert together in LA.
Selena Gomez got dressed up  for a photo shoot in LA as her April cover of Harper's Bazaar came out.
Kate Moss returned to the runway  for Louis Vuitton  during Paris Fashion Week.
Victoria Beckham ran errands in London  while her husband, David Beckham , celebrated a Paris Saint-Germain victory in France.
Bradley Cooper's ex-girlfriends Renée Zellweger and Zoe Saldana  caught up with Rebecca Hall  and January Jones  at the Miu Miu  fashion show in Paris.
Robert Pattinson showed off a grunge makeover  on the set of The Rover in Australia.