PEOPLE's Natural Beauty Contest winner Mallory Pennino doesn't have to think twice about her favorite feature.
"My freckles," she replies, instantly. "I've never been ashamed of them."
"They're just really unique to me," she says. "Mine have always been with me."
And the nursing student, 20, prefers to keep her face makeup-free to let them really shine.
"I don't really cover up my freckles, I just wear mascara to make my eyelashes look longer, but that's about it," Pennino says. "I just like to be more natural."
For Jennifer Aniston's revealing interview, in which she shares beauty tips and secrets she's learned over the years, pick up this week's issue of PEOPLE on newsstands Friday
Pennino, who will finish her nursing degree in August, graduated from high school a year early and chose to take on an accelerated nursing program. She knows she's ahead of most people her age, but doesn't mind.
"It's super fast and I'm super young to be doing this, but I love it," she says. "I knew what I wanted to do so I was like, why waste time?"
RELATED VIDEO: WATCH: Who Is the Most Beautiful Person You Know?
"Sometimes people would say they make me look younger, which is criticism, but my mom says, 'They're unique, they make you who you are, so just embrace what you have, and what God gave you.' " Pennino says.
And she remembers the mantra her mom always told her growing up.
"I think of them as kisses from the sun."