The event runs from 2 to 4 p.m. and is open to the public.
Organizers noted that the winner Saturday will participate in finals in Las Vegas Oct. 4 to 7. Two Costa Rican beauties have won the title in the past. They are Angie Quesada, who won in 2009, and Kimberly Chaves, who did so in 2010.
Some 26 models from 18 Latin countries participated in the event last year.
Participants in the Costa Rican semi-final have been involved in events all week in San José.
There are money prizes for those who place in Las Vegas as well as a number of items and prizes presented by sponsors.