Twilight actress Christian Serratos is back in Vancouver shooting the latest installment of the franchise and wearing Frankie B. Jeans Prepster Skinny. We’ve seen her in Frankie B. Jeans before the 19 year old California native is seeing her star rise quickly and recently was featured in a PETA2 campaign to end the slaughter of harp seals. I love it when young celebrities use their fame for good.