Justin Theroux Takes His Beloved Dog Kuma for a Walk in N.Y.C., Plus Pete Wentz, Iman and More

Justin Theroux wore a face mask when he took his dog Kuma for a walk in New York City.

Pete Wentz was spotted playing tennis in Studio City, California.

Iman was spotted in New York City on her late husband David Bowie's 74th birthday.

Hilary Duff was out and about in New York City, wearing a face mask and bundling up in a puffer jacket.

Alessandra Ambrósio shows off her famous figure during a visit to the beach in her native Brazil on Friday.

Another day, another trip to the beach for Leighton Meester, who surfs in Malibu with husband Adam Brody (not pictured) on Friday.

Gavin Rossdale and his pup keep it moving on Friday in Los Angeles.

Joshua Jackson is seen in character as he walks the set of Dr. Death on Thursday in N.Y.C.

Lily-Rose Depp links arms with a friend while out in N.Y.C.'s East Village on Wednesday in N.Y.C.

Sam Smith and his puppy get some fresh air while on a walk through Hampstead, London on Thursday.

Katie Holmes smiles from behind her mask on Thursday while out in New York City.

Another day, another bike ride for Arnold Schwarzenegger, who takes a Thursday spin around Santa Monica, California. 

Sutton Foster, Debi Mazar and Nico Tortorella are seen filming an episode of Younger on Wednesday in N.Y.C. 

Mark Wahlberg flashes a peace sign while seen leaving a doctor's office in Beverly Hills on Wednesday.

Pregnant Hilary Duff sips an iced coffee while walking her dog on Wednesday in N.Y.C. 

Zachary Quinto is seen running errands on Wednesday in L.A.

Kit Harington takes a run through his London neighborhood on Wednesday.

Shawn Mendes has all he needs — coffee and his cute pooch! — in Toronto on Wednesday.

Lily-Rose Depp blends in with the crowd on Wednesday during a walk through New York City.

Another day, another dog walk for Justin Theroux and his pup Kuma, who keep it cool in N.Y.C. on Wednesday.

Wayne Brady and his puppy costar have a photo op with Royal Canin in Los Angeles on Wednesday ahead of the AKC National Championship, airing on ABC on Jan. 17.

Leonardo DiCaprio gets into character while filming a scene for Don't Look Up in downtown Boston on Monday. 

Matt Damon sports a mask while out and about in L.A. on Tuesday. 

Zoey Deutch layers up to run errands in L.A. on Monday. 

Katie Holmes and Emilio Vitolo Jr. grab a coffee on Monday in N.Y.C. 

Tori Spelling gets sweet kisses from her dogs while out for a walk with husband Dean McDermott on Monday in L.A.

Lucy Hale steps out in L.A. on Tuesday, wearing a baseball cap, leggings and a puffer coat, as her dog Elvis comes along for the ride.

Queen Latifah is camera ready on the set of The Equalizer on Monday in Teaneck, New Jersey.

Justin Theroux carries a huge basket while out in N.Y.C.'s West Village on Tuesday with his dog.

Famke Janssen looks glamorous as she dog sits a friend's pup while out in N.Y.C. on Tuesday.

Leighton Meester is all smiles as she prepares to go surfing in Malibu on Monday with husband Adam Brody.

Mischa Barton goes on a coffee run with boyfriend Gian Marco Flamini on Monday in Los Feliz, California.

Wells Adams goes for a jog, wearing a blue tee, shorts and sneakers, on Monday in L.A.

Tayshia Adams and Zac Clark bundle up in N.Y.C. on Sunday to go shopping together.

Jenna Dewan celebrates American Girl's 2021 Girl of the Year Kira Bailey in L.A.

Jennifer Garner keeps it casual as she goes shopping in a tan sweatshirt and jeans on Monday in Pacific Palisades, California.

Katie Holmes and boyfriend Emilio Vitolo Jr. walk arm-in-arm as they stroll through N.Y.C. on Monday.

Nina Dobrev wears a tie-dye matching set on her way to grab lunch on Monday in L.A.

Bella Hadid looks chic in her snow gear as she hits the slopes in Aspen, Colorado on Sunday.

Kate Bosworth celebrates her 38th birthday with husband Michael Polish at a friend's house in Beverly Hills on Saturday.

Shawn Mendes walks his new puppy Tarzan with his sister Aaliyah on Sunday in Toronto.

Katie Holmes was spotted with a camera in hand during an outing in Washington Square Park in New York City.

Dua Lipa hit the beach in a bikini during a vacation with friends in Tulum, Mexico.

Tom Brady and the Tampa Bay Buccaneers played the Atlanta Falcons at Raymond James Stadium in Tampa, Florida.

Kris Jenner and boyfriend Corey Gamble were spotted out and about in Aspen, Colorado.

Lily James was spotted filming over Battersea Bridge in London for her upcoming film What's Love Got To Do with It.

Gwyneth Paltrow and Brad Falchuk enjoyed an afternoon New Year's Day walk together in Brentwood, California. 

Justin Bieber performed during NYE Live with Justin Bieber, presented by T-Mobile, at The Beverly Hilton in Beverly Hills, California.

Kendall Jenner was spotted in Aspen on New Year's Day.

Alessia Cara was seen out and about with some friends in Toronto.

Jessie James Decker was seen in New York City where she worked on New Year's Eve.

Alessandra Ambrosio starts off 2021 on a yacht with family and friends in Florianópolis, Brazil on Friday. 

Jennifer Lopez and Alex Rodriguez arrive for rehearsals for her performance on Dick Clark's New Year's Rockin' Eve in N.Y.C. on Thursday. 

Kylie Jenner and her mom, Kris Jenner, hit the slopes on New Year's Day at Buttermilk Ski Area in Colorado.

Ryan Seacrest flashes a smile while ringing in 2021 in N.Y.C. on Thursday. 

Teyana Taylor and Iman Shumpert attend their Black Tie Masquerade Party on New Year's Eve in Alpharetta, Georgia. 

Jackie Chan starts off 2021 by attending the Wish Dragon press conference in Beijing, China on Friday. 

Lucy Hale gets all warmed up for New Year's Eve celebrations in New York City's Times Square on Thursday, practicing for ABC's Dick Clark's New Year's Rockin' Eve.

Kris Jenner is almost unrecognizable on Thursday while hitting the slopes in Aspen, Colorado.

Jesse Tyler Ferguson keeps it casual for a Thursday coffee run in Los Feliz, California.

Former President Barack Obama hits the links on Monday while vacationing with his family in Hawaii.

A dressed-up Jennifer Lopez films a segment for ABC's Dick Clark's New Year's Rockin' Eve on Wednesday night in N.Y.C.'s Times Square.

Amber Tamblyn totes some homemade goodies while out in N.Y.C. on Wednesday.

Katie Holmes blends in with the crowd on Wednesday during an outing in New York City.

Claire Foy takes a solo stroll through rainy London.

Gavin Rossdale hits the court for a tennis session in Los Angeles on Wednesday.

Garcelle Beauvais keeps it California casual for a trip to the nail salon in Studio City, California, on Wednesday.

A masked Justin Theroux takes his dog Kuma out in N.Y.C. on Wednesday.

Mom-to-be Ashley Tisdale takes her dog for a walk in Los Angeles on Tuesday.