Twelfth Night,” a comedy of disguises and mistaken identities, is a smart play to reopen Shakespeare in the Park with after a two-year-long renovation break.

The actress is luminous, alongside her look-alike brother Junior Nyong’o, Sandra Oh and Peter Dinklage, in Shakespeare’s comedy at the newly revived Delacorte Theater.

At the newly renovated Delacorte, Saheem Ali directs a celebrity-packed production that is comically inventive but rarely stirring.