Question

Sandra: Mira las fotos de la boda de mi hermana. Carolina: ¡Ella _______ en su traje de novia!

Answer 1

According to the option provided the answer would be "¡ Ella está guapa en su traje de novia!" This would mean that she is pretty in her wedding dress.
if we pay attention to the verb form, it might be said that it agrees in gender and number with the subject pronoun "ella". It is 3rd person singular and feminine. <span />

Answer 2

está guapa....espero que esto ayude