Yo soy Betty, la fea(1999)

Beatriz Pinzón Solano is a brilliant economist with a master's degree in finance; she has only one flaw: she's ugly. Everything changes when she starts working at Ecomoda, one of the country's largest companies, where she meets and falls in love with Armando Mendoza. This time, life will give her a second chance to prove she can become the most desired and beloved woman in the world.