Celebrity photos of the week: Michael Bublé ladders up, Taye Diggs does Hedwig, and more

As a who's who of celebrities were on the promotion trail for new films this week, other stars got goofy at parties and appearances. In perhaps the funniest turn of events this week, Michael Bublé tried his luck on a freestanding ladder for America's Got Talent, quickly realizing that he doesn't share contestant Uzeyer Novruzov's skill as judge Howard Stern gave him the buzzer.

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90210 alum Ian Ziering, on the other hand, found himself in the midst of a Sharknado he hadn't signed up for as Greg T. from the Elvis Duran and the Morning Show chased the Sharknado 3 star as the two had a laugh.

Looking glamorous as ever across the sea in glitzy Saint-Tropez, Kate Hudson attended Leonardo DiCaprio's star-studded fundraiser for his eponymous foundation. The actress wore a gown by Welsh designer Julien Macdonald which featured a plunging keyhole cutout on the neckline and a sheer skirt.

Hot new couple Gigi Hadid and Joe Jonas, who were spotted in Toronto a few months ago, stepped out in sunny Los Angeles in coordinated looks - white t-shirts on top, dark jeans on the bottom. The couple that dresses together...

And as Taye Diggs made his Broadway debut in the gender-bending Hedwig and the Angry Inch, to rave reviews and great anticipation, costars like Christina Hendricks and Charlize Theron, and Tom Cruise and Simon Pegg, promoted their new films around the world.

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Click any photo to see what else the stars were up to this week!

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