London: Pop star Rihanna, who drank beer on the day of her grandmother`s funeral in Barbados, apologised for her behaviour.
The funeral was Tuesday and the 24-year-old performer shared her feelings on the same day with her followers on Twitter.
She posted an image of herself make-up free and holding what appeared to be a bottle of beer.
The caption, which accompanied the picture, read: "I had to!!! Sorry granny," reports femalefirst.com.
She initially attended Clara "Dolly" Braithwaite`s first funeral in New York and then went to her home country for the traditional follow-up funeral.
IANS