WordNet sense 1 (having or showing self-esteem):

self-respecting, self-respectful

WordNet sense 2 (feeling self-respect or pleasure in something by which you measure your self-worth; or being a reason for pride):

proud

WordNet sense 3 (used of a person's appearance or behavior; befitting an eminent person):

distinguished, grand, imposing

WordNet sense 4 (refined or imposing in manner or appearance; befitting a royal court):

courtly, formal, stately