Lata, 86, took to Twitter to share the message and said she is really proud of her sibling.
"Namaskar. Prime Minister of Canada has sent best wishes to my sister Usha on her birthday. Usha, we are really proud of you," she tweeted.
She shared the picture of the birthday note along with the tweet which read, "Usha Mangeshkar. It's a great pleasure to send you best wishes and warmest congratulations on the occasion of your eightieth birthday."
"Many grateful thanks the Rt Hon PM of Canada for sending me his greetings on the occasion of my birthday.