How many movies have Gayatri Su-Lin Pillai and Helmi Yusof collaborated on?

They have worked on 4 movies together! Their first movie together was Histeria (2008) while their highest rated movie together was Hantu Kak Limah Balik Rumah (2010). They have not worked together since Claypot Curry Killers (2011). They are most known for their horror films together.