The 26-year-old actress only wears comfortable clothes for big events as she finds posing for cameras nerve-wracking, reported Contactmusic.
"Being on the red carpet tends to be stressful because there are a million cameras and some are looking for that embarrassing photo, Blake said.
"So my advice is always feel comfortable in what you're wearing - and that includes your clothes, your shoes, your make-up. That is what will make you feel the most confident," she added.
Blake likes getting ready for special occasions where she has the opportunity to wear glamorous, floor-length gowns and prefers having her hair down in loose waves.