Gloria Estefan has paid tribute to her husband as they prepare to celebrate their upcoming 35th wedding anniversary.

The 55-year-old singer has been married to Emilio Estefan since 1978 and they will mark 35 years as man and wife on 1 September (13).

Estefan, who manages a chain of restaurants and hotels with her husband, has now lavished praise on her partner, insisting they were "destined" to be together, and she also revealed the secret to their successful marriage.

She tells the London Evening Standard, "We do everything together - he's my face to the rest of the world. We make decisions together and we run a lot of businesses together... There is no real secret (to a happy marriage)... but we just happen to have very different personalities that balance each other out. There is a great deal of respect and there is a line that is never crossed. There should be a line of respect with the person you love dearly.

"You can always forget but you can't take things out of a person's heart and mind. We rarely differ on business, so on the things that count, that can really tear you apart, we're pretty much on the same page. I never imagined I'd get married that early, if at all, but luckily I found him and I think it was destined."

The couple is parents to a son and daughter, and they became first-time grandparents last summer (12) when their daughter-in-law gave birth to a baby boy.