How They Do It: Kisses of Politicians and Celebrities

Anthony Rossomando, left, Andrew Wyatt, and Mark Ronson, right, kiss Lady Gaga as they pose in the press room with the award for best original song, motion picture for "Shallow" from the film "A Star Is Born" at the 76th annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, 6 Jan. 2019, in Beverly Hills, Calif.

Ukrainian comedian and presidential candidate Volodymyr Zelenskiy, and his wife Olena Zelenska, left, kiss each other after the second round of presidential elections in Kiev, Ukraine, Sunday, 21 April 2019. Ukrainians voted in a presidential runoff as the nation's incumbent leader struggles to fend off a strong challenge by a comedian who denounces corruption and plays the role of president in a TV sitcom.

Maluma, left, kisses Madonna as they perform "Medellin" at the Billboard Music Awards on Wednesday, 1 May 2019, at the MGM Grand Garden Arena in Las Vegas.

US President Donald Trump kisses Brigitte Macron, wife of French President Emmanuel Macron, as Japan's Prime Minister Shinzo Abe and his wife Akie Abe, look on during a family photo session in front of Osaka Castle at the G-20 summit, Friday, 28 June 2019.

French President Emmanuel Macron kisses the head of a wellwisher after voting in the European elections in Le Touquet, northern France, Sunday 26 May 2019.

Nathalie Loiseau, center, head of French President Emmanuel Macron's party list, gets a kiss from a supporter at the campaign headquarters, Sunday, 26 May 2019 in Paris.

Barcelona's Lionel Messi kisses his wife Antonella Roccuzzo as they celebrate after winning the final of the Copa del Rey soccer match between FC Barcelona and Sevilla FC at the Vicente Calderon stadium in Madrid.

Offset and Cardi B kiss as they arrive at the Billboard Music Awards on Wednesday, 1 May 2019, at the MGM Grand Garden Arena in Las Vegas.

Britain's Camilla, Duchess of Cornwall gets a kiss from a D-Day veteran at a service of remembrance at Bayeux cemetery on 6 June 2019 in Bayeux, northern France, as part of D-Day commemorations marking the 75th anniversary of the World War II Allied landings in Normandy.

French President Emmanuel Macron kisses German Chancellor Angela Merkel as she leaves the Elysee presidential palace after their meeting in Paris, Wednesday, 27 Feb. 2019.

Spanish actor Antonio Banderas (L) and Spanish film director Pedro Almodovar (R) kiss Spanish actress Penelope Cruz during a photocall for the film "Dolor Y Gloria (Pain and Glory)" at the 72nd edition of the Cannes Film Festival in Cannes, southern France, on 18 May 2019.

President Vladimir Putin and class teacher of the president Vera Gurevich at a reception on the occasion of the celebration of the 74th anniversary of the Victory in the Great Patriotic War of 1941-1945.

Actor/director George Clooney gets a kiss from his wife Amal at the 46th AFI Life Achievement Award gala honouring him in Los Angeles. The American Film Institute hosted a star-studded gala earlier this month to honour Clooney’s achievements as an actor, director and activist.

Right-wing politician Marine le Pen kisses a girl while campaigning in Henin-Beaumont, northern France, Friday 24 May 2019. Le Pen said before the final rally that President Emmanuel Macron's party "must not be first Sunday night."

Director Quentin Tarantino kisses his wife Daniela Pick upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, 21 May 2019.