Official documents in Murcia, Spain (where she was born) and the United States indicate she was born in 1941, but Charo has insisted she was born in 1951 and persuaded a United States court to uphold the 1951 birth year as official.
The performer has said in past interviews that her parents allowed her to falsify her age to appear to be older after marrying 66-year-old band leader Xavier Cugat when she was 15.
Further complicating the question is the fact that contemporary press reports gave her age at marriage as 21, an April 1966 column on the wedding plans stated she was 20 and Cugat was 60, and columns less than two years before the marriage refer to her as Cugat's "18-year-old protegée" — which, if she was falsifying her age, would have made her actually 13 at the time.
In October 1977 — the same year in which Charo filed for divorce from Cugat and became an American citizen — a United States court upheld the 1951 birth year as official, with the performer providing a sworn statement from her parents in support of her claim.
Commenting on the disputes over her age, she has said that the public's disbelief could prove advantageous: "But if people really believe I'm older, that's fine. Don't be surprised if I come out with my own cosmetics, a new energy bar and maybe some vitamins."