United Kingdom, March 27 -- Jennie Garth finds it "very hard to understand" Luke Perry and Shannen Doherty's deaths.

The 52-year-old actress admitted she still considers her former 'Beverly Hills, 90210' castmates as being "alive in [her] mind" so struggles with the fact she is no longer able to see or speak to them after Luke died in 2019 following a stroke and Shannen passed away from cancer last July.

Jennie appeared on 'Two Jersey Js', and podcast co-host Jennifer Fessler said: "We should also tell you, also, how sorry we are you've lost two of your castmates...

"You seem to have been such a tight-knit group and for years and way too young for two of you, unfortunately, to not be with us anymore."

The actress replied: "It doesn't ...