Blondet became famous at around the age of 14, when she began to appear on Puerto Rico's telenovelas. As a soap opera actress, she was on many of Puerto Rico's soaps of the late 1970s, and the early 1980s.
In 1981, she married the famous Bolivian actor Luis Abreu, with whom she procreated a girl. She divorced Abreu in 1982, and by then, magazines such as Vea, Teve Guia, etc etc, started talking of a supposed rivalty between her and Millie Aviles, another young, Puerto Rican actress who resembled Blondet pshysically.
Blondet spent the rest of the '80s participating in different tv shows, soap operas and mini-series, as well as in some theatre plays. In 1987, her romance with actor Raul Rosado was well publicized.
In 1989, she married producer Harold Trucco, and they had two sons. But this relationship also ran into trouble and they divorced in the middle 1990s. However, in 1998, her career took off internationally when she was given the opportunity to co-host Univision's show Despierta America alongside Rafael Jose, Fernando Arau, Ana Maria Canseco, Neyda Sandoval and occasional host Samy, the famous Cuban hair-dresser and television personality. After divorcing Trucco, she has remained single, and she says she wants to dedicate her free time to her kids only.