You are beautiful, I am young) is a 1970 Hindi movie directed by Bhappi Sonie.
The film stars Dharmendra, Hema Malini, Pran, Helen and Rajindernath.
[1] Raja Sahib dies leaving a will that proclaims that his grandchild will inherit all his wealth.
The will also proclaims that the grandchild and the mother need to claim this by a certain date, failing so will transfer the wealth to Ranjeet (Pran), his nephew.
To protect her sister’s son from Ranjeet, Anuradha (Hema Malini) hides the child, who through various circumstances ends up with Sunil (Dharmendra) a Navy officer who brings the child home and looks after him.