Can't-Miss Celebrity Pics!

Kate Hudson's abs popped like whoa when she got together with some sexy ladies on Friday. The group smiled wide and showed off their physiques during a photo shoot in LA for Kate's fitness clothing line, Fabletics. In other interesting moments, Taylor Swift made the most of LA, Kristen Stewart looked cool and collected as she made her way through LAX, while Channing Tatum promoted his new film, Jupiter Ascending, with Jenna Dewan by his side. Across the pond in the royal worlds, Queen Elizabeth sanctioned the opening of a new firehouse, and Queen Letizia of Spain took care of official business in Madrid. Keep reading to see how other stars are spending the week.

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Reese Witherspoon and Jim Toth showed sweet PDA during their walk in LA on Friday.

Getty | Ari Perilstein

Joe and Nick Jonas let loose at Zegna and GQ's bash in LA on Thursday.

Getty | Dave Kotinsky

Lauren Conrad and Lo Bosworth proved they're still as adorable as ever together at a John Frieda event in NYC on Thursday.

Getty | Gregg DeGuire

Michelle Williams returned to the red carpet at Louis Vuitton's party in LA on Thursday.

Getty | David M. Benett

Keira Knightley and Benedict Cumberbatch attended a screening for their movie, The Imitation Game, in London on Thursday.

Getty | Gisela Schober

Nicole Kidman and Damian Lewis got silly while promoting Queen of the Desert at the 65th Berlin International Film Festival on Friday.

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James Franco had a thick beard at the Queen of the Desert event during the 65th Berlin International Film Festival on Friday.

Getty | Craig Barritt

Cindy Crawford and Rande Gerber brought their kids, Kaia and Presley, to a screening of Hospital in the Sky in NYC on Thursday.

Getty | Jamie McCarthy

Pregnant Ashlee Simpson and husband Evan Ross treated her son, Bronx Wentz, to the Crayola Color Alive event in NYC on Thursday.

Getty | Charley Gallay

Jennifer Hudson brought a lot of energy to the Turn It Up For Change Ball, which benefits the Human Rights Campaign, in LA on Thursday.

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Taylor Swift's outfit was perfect for the weather in LA on Wednesday.

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David Beckham played photographer in London on Thursday.

Getty | Ray Tamarra

Ryan Reynolds couldn't have looked more handsome outside the Late Show With David Letterman in NYC on Wednesday.

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Kristen Stewart and Alicia Cargile breezed through LAX on Wednesday.

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Jennifer Garner smiled on her stroll in LA on Wednesday.

Getty | James Devaney

Tom Hanks and Brian Williams were really feeling the hockey game between the Boston Bruins and New York Rangers in NYC on Wednesday.

Getty | D Dipasupil

Gabrielle Union brought her big smile and hot looks to the NYC set of Extra on Thursday.

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Tom Cruise went out with a smile during a break from filming Mission: Impossible 5 in London on Wednesday.

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Gwen Stefani kept it casual in LA on Thursday.

Getty | Raymond Hall

Hugh Jackman took his adorable dogs on a walk in NYC on Thursday.

Getty | Chris Jackson

Prince Charles tried on a pair of goggles as his wife, Camilla, Duchess of Cornwall, chuckled during a visit to the Art Worker's Guild in London on Thursday.

Getty | Slaven Vlasic

Ryan Reynolds was his usual handsome self at SiriusXM Studios on Wednesday in NYC.

Getty | Angela Weiss

Kerry Washington attended a fashion launch event in LA on Tuesday.

Getty | Gustavo Caballero

Will Smith got a little jiggy with it on the Miami set of Despierta America on Wednesday.

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Reese Witherspoon started out her Wednesday with some bubble tea in LA.

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Amy Adams looked ready for business on Wednesday in LA.

Getty | Frazer Harrison

Emma Stone was fresh faced at Monday's Academy Awards Nominees Luncheon in LA.

Getty | Chance Yeh

Simon Baker made a handsome arrival in France on Tuesday.

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Sarah Michelle Gellar stayed active with a Tuesday morning workout in LA.

Getty | Monica Schipper

On Tuesday, Lance Bass stopped by SiriusXM Studios in NYC.

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Rachel Zoe opted for a night out on Monday in LA.

Getty | Frazer Harrison

Channing Tatum and Jenna Dewan made for a gorgeous pair at the LA premiere of Jupiter Ascending on Monday.

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Ashlee Simpson and Evan Ross had breakfast together on Monday in LA.

Getty | Carlos Alvarez

Queen Letizia of Spain stepped out in Madrid on Monday.

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Heidi Klum was casually cool for her Sunday night flight at LAX.

Getty | Raymond Hall

On Monday, Sarah Jessica Parker braved the chilly weather in NYC.

Getty | Franco Origlia

Colin Firth attended the Monday photocall for Kingsman: The Secret Service in Rome.

Getty | WPA Pool

Queen Elizabeth formally opened the New South Lynn Fire Station on Monday in Norfolk, England.

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Kate Hudson flaunted her abs during a photo shoot for her Fabletics brand in LA on Friday.