self-conscious
US /ˌselfˈkɑːn.ʃəs/
UK /ˌselfˈkɑːn.ʃəs/

1.
feeling undue awareness of oneself, one's appearance, or one's actions
:
•
She felt self-conscious about her new haircut.
•
He was too self-conscious to speak in front of the crowd.
feeling undue awareness of oneself, one's appearance, or one's actions