The 90210 star insisted that she is fed up with having to look perfect all the time and hoped to inspire others not to feel embarrassed by how they look.
"I woke up this morning and decided I'm over Hollywood's perfection requirement," she tweeted.
"To all my girls (and boys) who have ever been embarrassed by their skin! I salute you! I'm not perfect - and that's okay with me!," she added.
The 24-year-old actress accidentally posted a topless picture of herself on Twitter earlier this year.
She dismissed the slip-up, saying that she's only "human".
On Thursday (May 3), 90210 was renewed for a fifth season by The CW.