。
She is very satisfied with her appearance.
Literal
She [topic-は] her own appearance [with-に] very is-satisfied.
満足する takes its target with に rather than を — 'satisfied WITH X' rather than 'satisfied X' — a particle pattern that often surprises learners coming from English. The progressive ~ている marks the ongoing state of being satisfied rather than the moment of becoming so. 容姿 ('appearance, figure') refers to one's visible looks taken as a whole.