Rob Lowe gets candid about his best on-screen kiss as other major stars dish on their worst

Celebrities are getting real about their best and worst on-screen smooches.

Rob Lowe recently praised one of his former co-stars as the best on-screen kiss of his career, while Nicole Kidman previously roasted one of her former screen partners as her worst.

Whether it was the circumstances surrounding the shoot, the chemistry between the actors or a co-star's choices at lunch, these star's share what can make or break a romantic scene for them.

Here are some stars who have disclosed their best and worst on-screen kisses.

Rob Lowe dished on the actress he considers to be his best on-screen kiss.

During a recent appearance on "Watch What Happens Live," the "The Outsiders" star told host Andy Cohen while playing "Plead the Fifth" that his best kiss was with co-star, Nastassja Kinski, while filming "The Hotel New Hampshire."

"Have a look at her," he said when asked what made her the best. "At that moment in time, she was probably the most beautiful woman Id certainly ever seen."

While she was his favorite co-star to kiss, he also mentioned he felt "very, very scared" to kiss her.

Sharon Stone has only one co-star in mind when it comes to her best kiss.

During an interview on  SiriusXMs "Radio Andy" in April, the actress called Robert De Niro, "the best kisser in the business," and said the kiss they shared while filming the 1995 movie, "Chicago," "really just knocked me out."

"We did this scene where I have to go to the bathroom, and because I play this hustler, I get him to give me money to go," Stone explained. "He gives me this money and I look at him like, Really? I think a little more than $50 for the bathroom.' And he … reaches in, and he gives me, like, $100, and then I lean over, and I kiss him."

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The kiss was enjoyed by both her and De Niro, with Stone telling Andy Cohen that when director, Martin Scorsese, asked if they wanted to film the scene again, "We both looked at him and went, 'Yeah, I think maybe we need one more.'"

Although fans love the kiss between Rocky Balboa and Adrian in "Rocky," Sylvester Stallone doesn't have fond memories from filming the scene.

In a recent interview with Page Six Hollywood, Stallone referred to his kiss with actress Talia Shire as "the kiss from hell," but it was no fault of the actress.

"Then I go in to kiss her — pull the hat off, the glasses — and… her nose is running. Badly," he said. "So we go in for the kiss and she goes [bad coughing noise]. And I go, Oh my God!And I have to keep moving forward. There is no reverse. So I knew exactly as soon as I kissed her that within an hour I had the flu."

He then recalled that shortly after filming the romantic scene, he found himself in bed with a runny nose.

did not hold back when it came to describing her worst on-screen kiss.

During an appearance on the "Las Culturistas" podcast in March, the "Practical Magic" star revealed she "cannot stand bad breath," cal