AceShowbiz - Jennie Garth has admitted to being "threatened" by her "Beverly Hills, 90210" co-stars.

The 49-year-old actress - who played Kelly Taylor on the hit teen drama alongside the likes of Tori Spelling, Shannen Doherty, Luke Perry and Jason Priestley - has opened up about the experience, revealing it made her "more competitive" with other women on set.

Chatting to Tori on their "9021OMG" podcast, she said, "If I'm honest, I think [the show] kind of taught me to be threatened by other girls, be threatened by other women [and] be more competitive because I wanted our co-stars approval or attention."

"It messed with me on a deeper level and not until later in life that I kind of think it wasn't ever about the other girls, and why did I ever make the other girls an enemy in my mind?"

"I think that Tori and I are always working through those messages as we grow older and trying to be better people and figure it all out."

Jennie suggested their time on the show - which launched in 1990 and ran for 10 seasons - gave them "mixed messages" for the younger stars.

She explained, "I think as a young girl… [the show] brought out a super competitive part of me being in that environment of being judged because of my looks or how I looked in an outfit."

"It was just a different day and age and it gave us young girls a lot of mixed messages. I, for many years, struggled with [it]."