Home » Blog » How to sign Sister: BSL Sign of the Day 13How to sign Sister: BSL Sign of the Day 13by Daniel Ryan13th September 20253rd November 2025Learn how to sign Sister in BSL. With your index finger bent, brush your finger against your nose twice. Author: Daniel Ryan Tags:Immediate FamilySign of the DaySister previousHow to sign Brother: BSL Sign of the Day 12nextRecap Quiz – Immediate Family: BSL Sign of the Day 14