A source told Us Weekly, "It didn’t seem like there was any ill will between them."
In fact, the former "Baywatch" actress also posed with Tommy's fiancée Sofia Toufa at the gala, which focused on animal rights.
The reunion happened just one month after Pamela opened up about their three-year marriage to People. She shared, "There was Tommy and then there was nobody else. He was the love of my life. We had a wild and crazy beginning that was too much for both of us. It really was love at first sight. I only knew him four days before I married him."
Though they divorced in 1998, they are friendly exes. She added, "We're good friends, we're getting better at co-parenting our kids. He’s such a supporter of mine and I'm really happy we're on such great terms."
At the PETA gala, Anderson chatted about teaching their kids about the importance of helping animals. "You have to do it by example. You can't really be a dictator. I just live my life the way I do and I have a lot of fun, so it's not like they're looking at me going, 'Gosh, you're so boring.'... You have to be a psychologist, I guess, to be a parent… So it's by example. That's the only want you can do it."