Singer Mariah Carey (L) is kissed by her husband Nick Cannon as Oprah Winfrey looks on while appearing on the "Oprah" television show being broadcast from New York's Central Park, September 18, 2009.

Actress Nicole Kidman (L) and Musician Keith Urban kiss during the match between Roger Federer of Switzerland and Tommy Robredo of Spain at the U.S. Open tennis championship in New York September 7, 2009.

Actors Kevin Bacon (L) kisses his wife Kyra Sedgwick (R) during Game 5 of their NBA Western Conference semi-final basketball playoff game between the Los Angeles Lakers and the Houston Rockets in Los Angeles, May 12, 2009.

Actor George Clooney kisses his girlfriend Elisabetta Canalis as they pose for photographers during a red carpet for the premiere of the movie "The Men Who Stare At Goats" at the 66th Venice Film Festival September 8, 2009.

Actress Eva Longoria Parker of the series "Desperate Housewives" kisses her husband Tony Parker (R) as they arrive for the screening of the film "Bright Star" by director Jane Campion at the 62nd Cannes Film Festival May 15, 2009.

Former Beatle Paul McCartney and Nancy Shevell, an MTA Board member, share a kiss as she leaves the MLB American League baseball game between the New York Yankees and the Texas Rangers at Yankee Stadium in New York August 26, 2009.

Actress Katie Holmes (C) kisses her husband actor Tom Cruise, who is carrying their daughter Suri, after Holmes finished the 2007 New York City Marathon in New York November 4, 2007.

Tori Spelling (R) kisses her husband Dean McDermott as they arrive at the Much Music Video Awards in Toronto, June 18, 2006.

Jennifer Lopez and her husband Marc Anthony kiss as they arrive at the world premiere of their movie El Cantante (The Singer) at the Raul Julia Theater in the Puerto Rico Art Museum in San Juan July 23, 2007.

U.S. actress Mira Sorvino kisses her husband Christopher Backus as they arrive for the screening of the film "Like Dandelion Dust" at the 35th Deauville American film festival in Deauville September 7, 2009.

Socialite Paris Hilton and her friend Doug Reinhardt kiss as they arrive on the red carpet for the screening of the film "Inglourious Basterds" by director Quentin Tarantino at the 62nd Cannes Film Festival May 20, 2009. Twenty films compete for the prestigious Palme d'Or which will be awarded on May 24.

Actor Jason Bateman kisses his wife Amanda Anka while watching Vera Zvonareva of Russia and Flavia Pennetta of Italy during their match at the U.S. Open tennis tournament in New York, September 6, 2009.

Actors Zac Efron and Vanessa Hudgens (L) kiss as they watch the Los Angeles Lakers play the Utah Jazz during the second half of Game 1 of their NBA Western Conference quarter-final game in Los Angeles, April 19, 2009.

Actor Robert Downey Jr. kisses his wife Susan Levin as they watch the Los Angeles Lakers play the Dallas Mavericks during their NBA game in Los Angeles March 15, 2009.

Jada Pinkett-Smith (L) kisses her husband Will Smith as the Los Angeles Lakers play the Boston Celtics in Game 4 of the NBA Finals basketball championship in Los Angeles June 12, 2008.

Heidi Montag and Spencer Pratt kiss as they pose for photographers at the 2008 MTV Movie Awards in Los Angeles June 1, 2008.

Model Heidi Klum and her husband singer Seal exchange a kiss during a car presentation in Berlin September 27, 2007.