Iggy Azalea does not always feel confident

Pop star Iggy Azalea has revealed that she struggles with poor self-esteem and sometimes wants to "crawl into a cave." 

The 25-year-old singer, who recently sparked speculation she's had a chin implant, said she doesn't think it is possible to be "confident 100 percent of the time," reported E Online.

"Some days I want to crawl into a cave because I don't feel confident at all, and then other days I feel great," the "Fancy" hitmaker said in an interview with Today Australia.

"I think it's like that for all human beings, not just young women. I think being confident 100 percent every day is something to aspire to, but I don't think it's humanly possibly for anybody," she said.