Leonardo DiCaprio shares PDA with Vittoria Ceretti for his 49th

Leonardo DiCaprio shares PDA with Vittoria Ceretti for his 49th birthday

Leonardo DiCaprio has turned 49, but having a girlfriend almost half his age keeps him young at heart.

The actor, who celebrated his birthday with an all-star bash that included Kim Kardashian, Chris Rock and Zoe Saldana, spent much of the evening showering his new girlfriend with kisses in a public display of affection.

The Oscar winner and 25-year-old Vittoria Ceretti showed off their feelings for each other throughout the night at the event, which took place in Beverly Hills on Saturday, an insider tells People.

The couple “was affectionate and kissed throughout the night,” the insider told the outlet. (There was a rather awkward scene outside the A-list party when the actor’s ex-girlfriend, Victoria Lamas, was refused entry to the event, which had a “strictly enforced” VIP guest list.)

Kissing: Leonardo and Vittoria were first spotted together in August (pictured in Las Vegas in April) Kissing: They were

Birthday: Leonardo DiCaprio celebrated his 49th birthday with an all-star party on Saturday night and spent much of the evening publicly showering his new girlfriend Vittoria Ceretti, 25, with kisses and showing her affection. (He is pictured on the left in Las Vegas in April, she on the right earlier this month)

Hot couple: The loved-up couple are pictured here in Spain in August

Hot couple: The loved-up couple are pictured here in Spain in August

Leo and Vittoria, an Italian model, were first spotted together in August in Santa Barbara, California.

They were later seen cozying up at a party in Ibiza in September before heading to Milan and Paris.

Vittoria also stood by her husband on Friday for a pre-birthday dinner in Santa Monica at celebrity hotspot Giorgio Baldi with pals Tobey Maguire, Jennifer Meyer and boyfriend Geoffrey Ogunlesi.

During Saturday’s celebration, several of The Revenant star’s friends picked him up and carried him around the room.

Lil Wayne was on the guest list and even sang for the birthday boy.

That seemed to set the mood, as the source revealed: “At some point, everyone was singing classic hip-hop.”

Party time!  Kim Kardashian, 43, was one of the high-profile guests at the Leonardo-star-studded birthday party in Los Angeles over the weekend

Party time! Kim Kardashian, 43, was one of the high-profile guests at the Leonardo-star-studded birthday party in Los Angeles over the weekend

Famous Face: Lady Gaga, 37, was also in attendance at the bash and was seen in the backseat of a car heading home Beauty: Salma Hayek, 57, was all dolled up as she left the birthday extravaganza with glittery makeup that matched her green dress

House of Gucci reunion: Lady Gaga, 37, and her former co-star Salma Hayek, 57, were both in attendance at the glamorous event

Incredible: Rita Ora, 32, went to the party in a plunging black mini dress and a stylish black handbag Statement: Kate Beckinsale, 50, made a very sparkly appearance in a bejeweled bodysuit as she arrived at Leonardo DiCaprio's 49th birthday bash in Beverly Hills on Saturday

Fight for the hem! Rita Ora, 32, and Kate Beckinsale, 50, both wore stunning micro mini dresses with high heels

A-list couple: The newly engaged Channing Tatum (43) and Zoe Kravitz (34) were also at Leo's party

A-list couple: The newly engaged Channing Tatum (43) and Zoe Kravitz (34) were also at Leo’s party

For him and her: Zoe and her husband harmonize in a black and white color palette

For him and her: Zoe and her husband harmonize in a black and white color palette

Surprising couple: Olivia Wilde, 39, who split from Harry Styles, 29, last year, was spotted leaving the party with fellow single Chris Rock, 58

Surprising couple: Olivia Wilde, 39, who split from Harry Styles, 29, last year, was spotted leaving the party with fellow single Chris Rock, 58

Lavish party: Many celebrities arrived at a villa in Beverly Hills to celebrate the Oscar winner's 49th birthday with him.  His celebrity guests included Beyoncé and Jay-Z, Lady Gaga, Kim Kardashian and Chris Rock

Lavish party: Many celebrities arrived at a villa in Beverly Hills to celebrate the Oscar winner’s 49th birthday with him. His celebrity guests included Beyoncé and Jay-Z, Lady Gaga, Kim Kardashian and Chris Rock

The insider said the party, which also included Beyoncé and Jay-Z, lasted until around 4 a.m.

One of Leo’s next projects will be close to his heart.

He is a producer of the animated film Ozi: Voice of the Forest.

The film centers on a young orangutan orphan who uses his influencer skills to save his forest and home from deforestation by a palm oil producing company.

The film premiered at the Annecy Festival on June 13, but has not yet been released in the United States. A release date is planned for 2024 in Europe.

The project’s speakers include Laura Dern, Djimon Hounsou and Donald Sutherland.