Celebrity photos of the week: Katie Holmes's special serenade, 'Hello' to Adele and more

Sisters Kendall and Kylie Jenner maintain their strong social media game by taking selfies at the launch of their new clothing line Kendall+Kylie in Sydney, Australia.
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Supermodel Miranda Kerr kicks off the holiday season at the Swarovski Star unveiling ceremony at Rockefeller Plaza in New York City.
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Acting co-stars Ralph Fiennes and Cate Blanchett (Oscar and Lucinda) catch up at the Museum of Modern Art's 8th Annual Film Benefit in New York City.
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Reese Witherspoon, Kelly Sawyer, Jessica Alba and Jenna Dewan Tatum enjoy a girls' night out at the Baby2Baby gala in Los Angeles.
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Jennifer Aniston hosts a special dinner for best gal pal Jennifer Meyer to help celebrate the launch of the jewelry designer’s collaboration with Barneys New York.
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“This one’s for you Katie!” Designer Zac Posen serenades actress Katie Holmes at “An Intimate Celebration Honoring WWD and Variety Stylemakers Designer of the Year” gala in Los Angeles.
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Jennifer Lawrence busts a move with Jimmy Fallon during a visit to The Tonight Show.
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On the eve of the release of her new album 25, Adele takes time to greet some excited fans outside Radio City Music Hall in New York City.
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