
U.S. President Barack Obama takes a selfie with television personality Bear Grylls while visiting Alaska on Wednesday, September 2. "Glad this was the only Bear I met in the park," Obama said on the White House Instagram account. Obama taped a show with Grylls that will air later this year.

"Rap$tar art in the ceiling," is what Tyga called this on Monday, September 7.

Kate Hudson, right, takes a selfie with fellow actress Jennifer Aniston on Wednesday, September 2. "Who's that gorgeous lady peekin over my shoulder?" Hudson said on Instagram. The two are filming a movie together called "Mother's Day."

Actor Stanley Tucci poses with fans Thursday, September 3, as he arrives at the Venice Film Festival in Venice, Italy.

Actress Keke Palmer posted this selfie Monday, September 7, with a smiley face and the caption, "When u get a fresh cut."

Tattoo artist Kat Von D lies in bed with a cat on Thursday, September 3. "Good morning!" she said on Instagram.

A customer takes a selfie next to a "Star Wars" Stormtrooper display at a Disney Store in Santa Monica, California, on Friday, September 4. Retailers around the world opened their doors early on "Force Friday" to sell new "Star Wars" merchandise to eager fans.

Actor Tom Hardy leans in for a fan's selfie at the London premiere of "Legend" on Thursday, September 3.

Actor Jon Bernthal will play The Punisher, a popular gun-toting comic-book character, on the upcoming season of "Daredevil." He teased his new role with this behind-the-scenes selfie he tweeted on Thursday, September 3. "PUNISH," he said.

A fan takes a selfie with Internet sensation Grumpy Cat before a Major League Baseball game in Phoenix on Monday, September 7.

Actress Gabrielle Union takes a selfie with her husband, basketball star Dwyane Wade, while visiting her hometown of Omaha, Nebraska, on Friday, September 4. "In these Omaha streets," she wrote on Instagram.

Country singer Brad Paisley makes a funny face while performing live on the set of ESPN's "College GameDay" on Saturday, September 5.

Fans in Deauville, France, take photos with actor Orlando Bloom at the Deauville American Film Festival on Sunday, September 6.

Wisconsin Gov. Scott Walker, a Republican presidential candidate, poses for a selfie during a campaign stop in Midland, Texas, on Friday, September 4.

Actor John Boyega, who will be starring in the new "Star Wars" movie later this year, takes a photo with fans in London on Friday, September 4.

Alvand, an 18-year-old Syrian refugee, takes a selfie with his friends after they crossed into Hungary from Serbia on Saturday, September 5. See Europe's migration crisis in 20 photos

Married soccer stars Dom Dwyer and Sydney Leroux take a selfie together in a Las Vegas pool on Wednesday, September 2. "Happy," Dwyer wrote on Instagram.

"Having lunch in the same seat where I filmed my Crazy Stupid Love scenes. #weird," said singer Josh Groban on Monday, September 7.

People take a photo with a mascot while visiting a museum in Waldenburg, Poland, on Thursday, September 3.

"Back to work!" businesswoman Ivanka Trump said on Tuesday, September 8. She had been visiting Italy with her family, according to her Instagram account.

A girl takes a selfie during a farmers demonstration in Brussels, Belgium, on Monday, September 7. Thousands of angry European farmers set off fireworks, blared horns and blocked streets with tractors as they demanded emergency European Union funds to help them cope with plunging food prices and soaring costs.

Fans take a selfie during a college football game at the University of Florida on Saturday, September 5.

Maroon 5 frontman Adam Levine wears a neck brace in this selfie posted to his Instagram account on Sunday, September 6. Levine had to postpone a concert in Daegu, South Korea, because of "neck muscle issues," according to The Hollywood Reporter. "Hey guys. sorry we had to reschedule... I posted this photo of sad neck brace Adam purely for your sympathy," Levine said on Instagram. "See you Thursday! #Maroon5 #Vtour2015."

Model Alessandra Ambrosio snaps a selfie on a beach in Venice, Italy, on Thursday, September 3. See 23 selfies from last week