Celebrity photos of the week: Lady Gaga and Justin Bieber's love fest, star twinning and more

Julianne Hough and Olivia Munn had the same fashionable idea at Direct TV's Super Saturday Night party during the Super Bowl. The two stars were the best dressed pair in chic white pant suits. <p>Photo: © Getty Images</p>
Lady Gaga and Justin Bieber hugged it out at the Saint Laurent special presentation at L.A.'s Hollywood Palladium. <p>Photo: © Getty Images</p>
Blake Lively introduced her husband Ryan Reynolds to supermodel Karlie Kloss at the amfAR Gala in New York. <p>Photo: © Getty Images</p>
Football fans Taraji P. Henson and Amy Adams watched Super Bowl 50 together in Santa Clara, California. <p>Photo: © Getty Images</p>
The cast of <i>Zoolander 2</i> is so hot right now! Ben Stiller, Will Ferrell, Penelope Cruz and Owen Wilson had some fun at the New York premiere for their new fashion flick by walking the purple carpet in character. <p>Photo: © Getty Images</p>
Hollywood's cutest couple George and Amal Clooney enjoyed a date night at the Berlin International Film Festival. The actor was on hand to premiere his film <i>Hail, Caesar!</i> <p>Photo: © Getty Images</p>
All eyes were on Courteney Cox and Demi Moore at the launch of the Superga XO Jennifer Meyer jewellery collection in Los Angeles. <p>Photo: © Getty Images</p>
The ladies of <i>How to be Single</i> (From left: Leslie Mann, Dakota Johnson, Alison Brie and Rebel Wilson) were all giggles on the pink carpet at the film's premiere in London. <p>Photo: © Getty Images</p>
Nicole Kidman rocked some major bling during the second night of the 66th Festival di Sanremo in Italy. <p>Photo: © Getty Images</p>
This week, Dame Helen Mirren picked up another award for her trophy case! The Oscar winner received Germany's Golden Camera award for her work on stage, screen and television. <p>Photo: © Getty Images</p>
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