Thiessen was a teen idol during the 1990s , starting from her role as cheerleader Kelly Kapowski on '' Saved by the Bell '' and then playing bad girl Valerie Malone on '' Beverly Hills , 90210 '' . In a much-discussed moment , Justin Bieber appeared wearing a T-shirt with a photo of Thiessen in her '' Saved by the Bell '' days at the 2011 MuchMusic Video Awards , admitting his admiration for her . Basketball player Chris Paul also revealed publicly that he was a fan of Thiessen back then , when she sent him an autographed photograph of her '' Saved by the Bell '' - era for his 29th birthday in 2014
2011 MuchMusic Video Awards
2011 MuchMusic Video Awards
Tiffani Thiessen