Mumbai: Toddler Aaradhya Bachchan made her mom and actress Aishwarya Rai's 40th birthday special when she sang "Happy Birthday" to her on Friday. "Aaradhya sleeps very late, so in the midnight she sang Happy Birthday to me. It's a very special experience. She did the same last month for paa (Amitabh Bachchan) also," Aishwarya told journos at her residence Janak while celebrating her birthday with them. "She first wished herself and then she wished me," added the actress who is married to actor Abhishek Bachchan.

Any special gift from Abhishek? "We will leave it to Abhishek to share it with you. He has given me a gift, but the biggest gift he has given me is Aaradhya. She is my biggest gift," said the former beauty queen known for her work in films like "Chokher Bali", "Hum Dil De Chuke Sanam" and "Devdas". "Aaradhya means the world to me. She is the best gift of my life. Two years ago when I was expecting baby that time was extremely special," she said.

Aishwarya celebrated her birthday by donating cash for cancer patients. "Heartfelt thank you to everyone for the wishes. It's a good coincidence that my birthday comes with Diwali... It's a celebration time. I am thankful to God for this life... Thankful to my parents for this gift of life. It means a lot to me. I embrace everything that life gives me," Aishwarya Rai Bachchan said. "Every year I help cancer patients and this year also I have donated some amount. Every year I do something like this... It is something my parents have taught me - to do something meaningful as it makes a difference to those people. I believe in doing service for the society," said the actress, dressed in a red salwar suit on her big day.