Memorial Day weekend signals the unofficial start of Summer and that means temperatures are rising! We're celebrating with a look at stars who keep the sparks flying with hot PDA when the weather heats up. Dax Shepard and Kristen Bell [1] took their love to the beach in 2008 while Anna Kournikova [2] and her longtime boyfriend Enrique Iglesias got sexy on a park bench in 2003. Start scrolling to get the hottest celebrity PDA moments of the season!
Emily VanCamp and Joshua Bowman were all over each other in June 2012 during their romantic getaway to Monaco.
Kristen Bell [3] and Dax Shepard were all arms in on the beach in Rome in June 2008.
Olivia Wilde [4] and Jason Sudeikis kissed in Hawaii in June 2013.
Kate Hudson [5] and Matthew Bellamy shared a sweet moment in front of their newborn, Bingham, while out in London in August 2011.
David Beckham [6] and Victoria Beckham [7] cuddled up on a yacht together in June 2005 while in Saint-Tropez.
Penn Badgley [8] got a handful during an NYC makeout session with Blake Lively [9] in July 2010.
Jay-Z and Beyoncé Knowles [10] shared a sweet kiss during a getaway to the South of France in September 2012.
Naomi Watts [11] and Liev Schreiber [12] were spotted sharing a kiss in July 2012 while vacationing in the South of France.
Jennifer Lopez [13] and Casper Smart kissed in the pool in Miami in September 2012.
Justin Timberlake [14] kissed Jessica Biel [15] in LA back in August 2008.
Soccer star Cristiano Ronaldo and girlfriend Irina Shayk let loose on a July 2012 beach vacation in Saint-Tropez.
Selena Gomez [16] and Justin Bieber showed PDA while splashing around in Maui in May 2011.
Kellan Lutz [17] and girlfriend Sharni Vinson vacationed in Saint-Tropez in July 2012.
Evangeline Lilly [18] and Dominic Monaghan got cozy in May 2006 while on the beach in Oahu.
Robert Pattinson [19] and Kristen Stewart [20] shared a sweet embrace at an On the Road afterparty during the 65th annual Cannes Film Festival in May 2012.
Mischa Barton [21] wore a hot-pink swimsuit and hit the beach with her boyfriend, Sebastian Knapp, during their July 2012 stay in Ibiza.
Drew Barrymore [22] bit Will Kopelman's lip while touring Rome together in September 2011.
Jim Toth put his arm around wife Reese Witherspoon [23] after flying to Paris in July 2011.
Joshua Jackson [24] and Diane Kruger [25] gave each other love at the French Open in May 2012 in Paris.
Dane Cook [26] could not take his hands off his girlfriend in Maui in August 2011.
Supermodel Doutzen Kroes shared a kiss with husband Sunnery James during a June 2012 layover in Miami.
Gisele Bündchen [27] gave her husband, Tom Brady [28], a tight hug in June at a Boston park.
Lauren Conrad [29] and boyfriend William Tell enjoyed a kiss at Nick's Coffee Shop in LA in June 2012.
Anna Kournikova [30] and Enrique Iglesias found a nearby park bench in Santa Monica, CA, for some PDA in September 2003.
Eva Longoria [31] and Eduardo Cruz broke from sightseeing in Spain for PDA in June 2012.
Sienna Miller [32] and Tom Sturridge packed on PDA as they took in the French Open together in June 2012 in Paris.
Scott Speer towered over petite Ashley Tisdale [33] during a romantic stroll along an LA beach in July 2012.
Ashton Kutcher [34] stole a sweet kiss from girlfriend Mila Kunis [35] in June in the South of France.
Julia Roberts [36] smooched Danny Moder during a day at the beach in Kauai with their kids in August 2012.
Rebecca Romijn [37] and Jerry O'Connell [38] stopped during an LA bike ride in LA in July 2007.
Halle Berry [39] and Olivier Martinez held hands during a romantic stroll along the Malibu, CA, shore in May 2012.
Andrew Garfield and Emma Stone [40] shared a passionate kiss in NYC while the real-life couple filmed The Amazing Spider-Man 2 in June.
Gavin Rossdale [41] planted a wet one on Gwen Stefani [42] in Palm Beach, FL, in August 2012.
Jenna Dewan kissed her husband, Channing Tatum [43], while vacationing in Italy in July 2010.
Adam Shulman wrapped his arms around Anne Hathaway [44] during a shopping date in LA in August 2012.
Michael Bublé and wife Luisana Lopilato hugged and laughed in Rome in July 2012.
Adrien Brody [45] and Lara Lieto basked under the sun on a yacht in the South of France in July 2012.
Ryan Seacrest [46] knelt down to give Julianne Hough love while they vacationed in Miami together in July 2011.
Alessandra Ambrosio and Jamie Mazur traded kisses during a July 2012 beach day in Malibu, CA.
Nicole Kidman [47] and Keith Urban [48] snuck a kiss while watching the US Open in NYC in August 2012.
Chris Hemsworth and Elsa Pataky cuddled during the London Olympics in August 2012.
Cindy Crawford [49] locked lips with Rande Gerber in Saint-Tropez in August 2005.
Matthew McConaughey [50] kissed Camila Alves after he completed the September 2008 Nautica Malibu Triathlon.
Paul McCartney and his former wife Heather Mills kissed in Pacific Palisades, CA, in June 2001.
Michael Douglas gave Catherine Zeta-Jones [51] affection in Italy in July 2010.
Jim Belushi dipped Jennifer Sloan in September 2007 for a romantic showing in LA.
Kate Bosworth [52] and Michael Polish shared an NYC kiss in June 2012.
Ellen DeGeneres [53] kissed Portia de Rossi [54] on the 34th Daytime Emmys red carpet in LA in June 2007.