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

<p>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.</p> Photo: © Getty Images
<p>Supermodel Miranda Kerr kicks off the holiday season at the Swarovski Star unveiling ceremony at Rockefeller Plaza in New York City.</p> Photo: © Getty Images
<p>Acting co-stars Ralph Fiennes and Cate Blanchett (<em>Oscar and Lucinda</em>) catch up at the Museum of Modern Art's 8th Annual Film Benefit in New York City.</p> Photo: © Getty Images
<p>Reese Witherspoon, Kelly Sawyer, Jessica Alba and Jenna Dewan Tatum enjoy a girls' night out at the Baby2Baby gala in Los Angeles. </p> Photo: © Getty Images
<p>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.</p> Photo: © Getty Images
<p>“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.</p> Photo: © Getty Images
<p>Jennifer Lawrence busts a move with Jimmy Fallon during a visit to <em>The Tonight Show.</em> </p> Photo: © Getty Images
<p>On the eve of the release of her new album <em>25</em>, Adele takes time to greet some excited fans outside Radio City Music Hall in New York City. </p> Photo: © Getty Images
<p>The British consul-general of the U.S. invited some of Sir Ian McKellan's friends to help toast the legendary actor at a special lunch in his honour. From left: Jane Seymour, Patrick Stewart, Kathy Bates and Laura Linney. </p> Photo: © Getty Images
<p>John Legend keeps a protective hold on expectant wife Chrissy Teigen at A+E Network’s <em>Shining a Light</em> concert in Los Angeles. </p> Photo: © Getty Images
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