
(15) Shannen Doherty and Jennie Garth
How it began: It seems as if life on the 90210 set in the 1990s was just as dramatic off-screen as it was on-screen. While fans of the show eagerly watched as Shannen Doherty's Brenda Walsh was pitted against Jennie Garth's Kelly Taylor for the affections of Luke Perry's Dylan McKay, in real life, the fictional rivals also squabbled before Doherty eventually left the show. Garth said in a 2014 interview with E! News about her time with Doherty on the show, "There were times when we wanted to claw each other's eyes out."
Peak feud moment: According to co-star Tori Spelling (who Garth said often played mediator between her and Doherty), one time a conflict between the two actors appeared to end in a physical fight.
Resolved: Yes. In an emotional 2016 Instagram post dedicated to Doherty's struggles with breast cancer, Garth wrote, "I used to be threatened by your spirit, now I'm in awe of it...I'm so grateful that young me got to be friends with you but especially 'old' me! The best is yet to come on this crazy journey! Love you!"