"There's always going to be people who don't like you," Rumer tells PEOPLE

Rumer Willis is opening up about her younger sister Tallulah‘s recent photo shoot.

Talking with PEOPLE Now, the winner of the 20th season of Dancing with the Stars supported her sister’s jaw-dropping racy photographs, which were taken by Tyler Shields and feature 22-year-old Tallulah topless in a variety of NSFW snaps.

“Art is just a form of expression,” Rumer told PEOPLE. “Whether it’s with music, dance photography all of it. It’s hard for my to place judgement on anybody who puts things out there because it’s perfectly acceptable to show murder and violence.”

Added Rumer, 28, “But if you show a woman’s breasts or her butt, somehow you’ve crossed a line. “In my opinion I think it’s a little crazy.”

When it comes to dealing with critics and being in the spotlight, Rumer has an important piece of advice for her younger sisters: “Just be unapologetically yourself.”

Tallulah Willis Wishes Her Sister Luck at the Cafe Carlyle
Credit: Michael Simon/Startraks

“I think it’s really easy to get into this industry and feel like you have to fit into a mold and feel like you have to say the right things and be the right way and not speak your mind, and I’ve learned a lot about that,” says the eldest daughter of Demi Moore and Bruce Willis. “And just be yourself.”

“There’s always going to be people who don’t like you… There’s always going to be people that do,” Rumer continues. “And if you’re just yourself, you’re going to get people who love you for who you are.”