Mumbai, Jan. 7 -- Actor Katrina Kaif extended a heartfelt birthday wish for her sister Isabelle Kaif.

On Saturday, Katrina took to her Instagram account and shared a picture of her sister from her birthday celebration which she captioned, "Happy happy happiest izzy bizzzy bee."

Katrina's husband and actor Vicky Kaushal also wished her sister-in-law.

He shared a picture on his Instagram stories and wrote, "Happy Happy birthday @isakaif! Wish you the most amazing year ahead."

Isabelle made her acting debut in Bollywood in Stanley D Costa's directorial 'Time To Dance' in which she was seen alongside actor Sooraj Pancholi.

She was also seen in 'Kwatha'.

Talking about Katrina's work front, she will be next seen in the thriller film 'Merr...