‘Blossom’ turned 30? Whoa! Joey Lawrence gives ET a behindthescenes tour in 1995, and chats with Mayim Bialik about filming the emotional series finale. Lawrence takes us room to room on set of the classic sitcom, and reveals the backstory of the cast’s ‘gum wall.’ Bialik opens up about the series ending after five seasons, and reflects on acting with Lawrence when he was just 13 yearsold!

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