Singer Beyonce Knowles' mother Tina Knowles-Lawson believes she's still "sexy and vibrant" at 61 because she refuses to put "limitations" on her lifestyle.

"I had some reservations but as I thought of all the women who tell me daily that I have inspired them to live a wholehearted life, which includes your sexuality. I am proud to be 61 years old and to not be putting limitations on my lifestyle.

"We can still be sexy and vibrant, fashionable, classy and fly until the day we die," she told Ebony magazine, reports femalefirst.co.uk.

Tina wed actor Richard Lawson in April, four years after she divorced her former partner and the father of her two children -- Beyonce and Solange, Matthew Knowles, after 30 years together.

However, despite her self-confidence and her belief women should never limit themselves when it comes to style and sex, Tina confessed she was confused when the magazine approached her to be their cover star.

She added: "When I was asked to do the Sexy Forever Ebony magazine cover, my first question was, 'Me, really'."