Riverdale star Madelaine Petsch stuns in plunging top after dishing on cast hookup rumors

 looked stunning in a plunging black-and-white buttoned-up tank top this week.

The Riverdale actress was helping get the word out about the debut of Sparkling Ice Soda Shoppe, a retro flavor, zero sugar beverage.

The event, which was held on the Santa Monica Pier in , was also attended by her former Riverdale costar .

The two stars were seen handing out cans of the new beverage as they chatted up locals.

At one point the old friends were joined by influencer Lars Gummer.

This comes after she talked past hookups on the Call Her Daddy podcast in September.

'May I set the record straight about "Riverdale," actually?' the star — who was — asked.

'Recently, an article came out saying that we all f****d each other on the show. I did not touch a single person on that show with a 10-foot pole.'

'May I repeat that one more time? I did not f**k a single person on "Riverdale." I never touched them. That’s what happened. Thank you for coming to my TED talk.'

Petsch added that after reading Apa’s interview with Entertainment Weekly, she thought, 'Hey, no, I did not f**k any of you.'

'I don’t claim that s**t at all. I don’t mix business and pleasure like that. I’ve never hooked up with a co-star.'

She also shared that her co-star Cole Sprouse — who dated castmate Lili Reinhart for several years during the show — .

He also told the publication that he waited to have sex because, at the time, he considered himself a 'proud Christian boy.'

However, he said that once he had sex with an unnamed actor on the show, things became 'a little complicated.'

'Then you’re on set, and now you’re fighting with them,' he shared.

Riverdale aired for seven seasons, from 2017 to 2023, on the CW.