Larissa Costa Silva de Oliveira[4] (born March 9, 1984),[1] commonly known as Larissa Costa, is a Brazilian model and beauty pageant titleholder who won the Miss Brasil 2009.

[3] Larissa Costa won the Miss Rio Grande do Norte in 2009, representing the city of São Gonçalo do Amarante.

[5] She won the national pageant in 2009 representing Rio Grande do Norte state.

[3] Larissa Costa's coronation as Miss Brasil ended her region's 20-year period without winning the beauty contest,[6] as in 1989, Flávia Cavalcante, from Ceará state, won the contest.

[6] She represented Brazil at the Miss Universe 2009 in Nassau, Bahamas but failed to place.