Katharine McPhee & David Foster Step Out in L.A., Plus Laura Dern, Kristen Stewart and More

Katharine McPhee and husband David Foster wear face masks and sunglasses while out on Tuesday in Beverly Hills. 

Laura Dern enjoys an afternoon walk on Tuesday in Santa Monica. 

Kristen Stewart is seen running errands on Tuesday in L.A. 

Serena Williams joins Instacart as they launch their #GiveFromTheCart Challenge to benefit Feeding America and fight rising food insecurity on Wednesday. 

Pete Wentz flashes a peace sign as he picks up groceries in a Grateful Dead t-shirt on Tuesday in L.A. 

Camila Mendes shows off her summer style in a purple crop top and high-waisted shorts on Tuesday in L.A.

Colton Underwood pounds the pavement solo in Huntington Beach, California, on Tuesday.

Camilla, Duchess of Cornwall, smiles during a reopening visit to the Youth Action Wiltshire Oxenwood Outdoor Activity Centre on Tuesday in Marlborough, England.

Kyle Richards puts on a happy face during a walk through her Beverly Hills neighborhood on Tuesday.

Joe Jonas and pregnant wife Sophie Turner twin in matching masks as they head to meet friends for lunch on Sunday in Los Angeles. 

Olivia Culpo steps out with her adorable new puppy Oliver Sprinkles to celebrate her 2020 Sports Illustrated Swimsuit Issue cover on Monday in Los Angeles.

Chris Pine grabs a bag of sunflower seeds from his car during a visit to Be Hive of Healing Integrative Medical & Dental Center on Monday in Agoura Hills, California.

Malin Åkerman takes her dog for a walk on Monday in L.A. 

Lucy Hale is seen out and about in L.A. on Monday. 

Zachary Quinto loads up on flavored water in L.A. on Monday. 

New mom Iggy Azalea turns the sidewalk into a catwalk on Sunday while making her way to a Los Angeles recording studio.

Armie Hammer heads out for the first time since announcing his separation from wife Elizabeth Chambers, taking his dog for a ride in L.A. on Monday.

Nelly gets the crowd going on Sunday night in celebration of the 20th Anniversary of "Country
Grammar" at Live Nation's first-ever U.S. drive-in concert series, Live From The Drive-In, at Hollywood Casino Amphitheatre in Maryland Heights, Missouri.

Mom-to-be Katherine Schwarzenegger takes five on Thursday while shooting a Rubbermaid 'Prep School' Instagram Live cooking demo in L.A.

Jordana Brewster showcases her signature style on Monday during a run to a grocery store in Brentwood, California.

Pete Wentz returns to the tennis court for a workout in L.A. on Monday.

Julianne Hough gets moving while filming at-home classes for her fitness movement KINRGY for FitOn.

Brad Paisley performs at Live Nation's first-ever U.S. drive-in concert series, Live From The Drive-In, at Hollywood Casino Amphitheatre in Maryland Heights, Missouri, on Friday night.

Kristen Stewart and girlfriend Dylan Meyer wear their masks for a lunch outing at Kitsune in Los Angeles on Sunday.

Lewis Hamilton celebrates after winning the Styrian Formula One Grand Prix at the Red Bull Ring racetrack in Spielberg, Austria, on Sunday.

David Beckham pays a socially distanced visit to Sir Tom Moore — who completed dozens of laps in his backyard garden in the spring to raise nearly $40 million for the U.K.'s National Health Service — to announce he's been chosen to captain the England Lionhearts squad of everyday heroes on Thursday in Bedfordshire, England.

A solo Henry Golding totes his chair and bag for a picnic in a Los Angeles park on Sunday.

Don Lemon, Tim Malone and their pups score sweet seats at The Hamptons drive-in premiere of National Geographic's Rebuilding Paradise on Sunday night.

Model Candice Swanepoel dons her mask and a jumpsuit for a Sunday stroll in N.Y.C.

Sweden's Prince Daniel enjoys a little R&R, playing in the Victoria golf tournament at the Ekerum golf resort in Borgholm, Sweden, on Monday.

Sandra Lee leaves The Archetype restaurant in Napa Valley, California, after grabbing a bite over the weekend.

Malin Akerman masks up in Los Angeles on Sunday.

Jennifer Lopez, in a MaskClub Tie Dye Spiral face mask, works up a sweat on a ElliptiGo Bike in Miami over the weekend.

Ireland Baldwin enjoys a beach day in Malibu with her boyfriend and friends on Sunday.

Palm Springs star Camila Mendes goes on a coffee run and wearing a face mask on Saturday in Los Angeles. 

Alessandra Ambrósio dons her summer attire in Los Angeles over the weekend.

Emily Ratajkowski is spotted out and about in New York City over the weekend.

Kim Petras — whose new music video for Kygo collaboration "Broken Glass" is out now — performs her infectious song "Malibu" on Jimmy Kimmel Live.

Emma Watson goes shopping in London with a friend on Friday.

Christian Bale enjoys a bodyboarding session in Malibu, California, on Friday.

Kate Beckinsale steps out for a shopping trip in Los Angeles on Friday, wearing an orange cardigan and animal-print pants.

Sam Smith enjoys a Friday coffee run with loved ones in London.

Olivia Wilde takes a walk in her Los Feliz, California, neighborhood with her dog on Friday.

Tyler, the Creator enjoys a solo bike ride in Los Angeles on Friday.

Jonah Hill heads to Malibu on Friday for a day in the surf.

Alessandra Ambrósio keeps it summery on Friday during a walk in L.A. 

New parents Jesse Tyler Ferguson and Justin Mikita fuel up on coffee in Los Angeles on Thursday, two days after welcoming their first child together.

Olivia Palermo shows off her street style in New York City on Thursday. 

Brad Pitt leaves ex-wife Angelina Jolie's home on his motorcycle on Thursday in Los Angeles. 

Lily Allen picks up food to-go at Sambal Shiok Laksa Bar with some friends on Friday in London. 

Gavin Rossdale grins as he hits the tennis court on Thursday in Los Angeles. 

Prince Charles is all smiles at a visit to the Turnbull & Asser shirt factory, which pivoted production to making scrubs for the NHS amid the coronavirus pandemic, on Thursday in Gloucester, England.

Jennifer Garner flashes a smile on Thursday while out for coffee in Brentwood. 

Kendrick Sampson takes the mic to address the crowd at a Black Lives Matter/Defund the Police
protest in Los Angeles on Wednesday. 

Another day, another run for Shia LaBeouf, who takes a jog in his Pasadena neighborhood on Thursday.

Kate Beckinsale looks stylish, pairing her outfit with a snakeskin patterned mask on Wednesday in L.A. 

John Mayer wears a mask as he heads to an appointment in L.A. on Wednesday. 

Kendall Jenner wears a SKIMS face mask and all black for a dinner with Justine Skye and a few friends at Nobu in Malibu on Wednesday.

Zach Braff and Florence Pugh wear masks and gloves while grocery shopping on Wednesday in L.A. 

Emily Ratajkowski steps out in New York City on Wednesday for a coffee. 

Rachel McAdams wears a baseball cap, sunglasses and mask while heading to the store in L.A. on Wednesday. 

Lindsey Vonn hits the hiking trail on Wednesday in L.A., wearing a cap, sports bra and leggings.

Lourdes Leon meets up with friends in N.Y.C. on Wednesday to grab a bite to eat. 

Zachary Quinto gets a little sunshine with his dog Skunk while out for their morning walk in L.A. on Wednesday.

Kelly Bensimon jogs through N.Y.C. on Thursday wearing a white tank, black shorts and matching sneakers. 

Kaia Gerber wears a matching athleisure set as she brings one of her tiny foster puppies on a juice run in Malibu on Tuesday.