The account was created Wednesday, and birthday wishes were sent to Shilpa through it on behalf of the little one.
"Happy Birthday Mummy, Milk's on you today! Make mine a double! Love u loads. My moms the best in the whole milky way galaxy, " read ViaanRajKundra's tweet when Shilpa turned 37 Friday.
Viaan even seemed to know his dad Raj Kundra's secret plans of surprising his mother.
"Spending time with my yummy mummy on her birthday today. We are getting a massage now. Dad has a surprise planned. Now I need Milk!!!!!"
Viaan already has over 2, 700 followers.
Shilpa gave birth to the baby May 21 at the Hinduja hospital in Mumbai. This is her first child with Kundra after the two got married in 2009.