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"Gossip Girl" and "Beverly Hills, 90210" may have taken place in distant zip codes — and different decades — but that doesn't mean Serena Van Der Woodsen and Brandon Walsh never crossed paths.
Blake Lively shared an adorable throwback photo of herself as a tiny toddler with her arms wrapped around a young Jason Priestley Thursday night.
"#tbt to when Serena Van Der Woodsen and Brandon Walsh were a thing. (Shh don't tell @robynlively ???)," she hilariously wrote.
Blake's older sister, "Teen Witch" star Robyn Lively, briefly dated Priestley in the early '90s, which explains why baby Blake was hanging out with the "90210" hunk.
What's next, Blair Waldorf and Dylan McKay?