When the media commented on her resemblance to her father's former co-star Reena Roy, she and Reena have stated that there is no resemblance and that Sonakshi looks like her mother Poonam Sinha.
Cousin of actress Bhavna and Pooja Ruparel ( Their maternal grandmothers are sister's).
Sister of Luv and Kush Sinha.
Niece of producer Dr. Lakhan Sinha.
Niece of Pahlaj Nihalani ( Mother's cousin).
She was born while Shatrughan Sinha was shooting for Maha Yatra with a full on beard.
Cousin Preeta Sinha is Co-founder at One Green Planet in New York, She is the daughter of Lakhan Sinha and is married to a boy named Neil.
Niece of director Loksen Lalvani. Loksen is married to Sonakshi's mother's sister.