Sweater: Perrine Jumper by Sezane (thanks riverdaleclothingblog!)
Betty Cooper (played by Lili Reinhart) on Riverdale on The CW was spotted wearing this blue knit crop cardigan on Riverdale on episode 'Purgatory' (5x04) in Feb 2021. Betty's Sweater is the Perrine Jumper by Sezane .