Liza Minnelli's Only Beauty Philosophy Is 'Just Make Sure You Look Good Before You Walk Out the Door!'

Liza Minnelli is an original beauty influencer, whose short haircut in the 1960s made major waves and cemented her status in the pantheon of iconic celebrity cuts.

Now as Minnelli celebrates what would have been mother Judy Garland's 100th birthday with the launch of Judy – A Garland Fragrance (which she helped develop with sister Lorna Luft) the award-winning performer, 76, opened up exclusively to PEOPLE about whether she'd ever change her iconic hairstyle, her relatable beauty philosophy and more.

Kevin Mazur/WireImage

Minnelli's hair and makeup may be memorable, but the legend says she doesn't "have a particular beauty philosophy" that guides her iconic look.

Her words of wisdom: "Just make sure you look good before you walk out the door!"

RELATED: Liza Minnelli and Lorna Luft Help Develop a Fragrance in Mom Judy Garland's Honor: 'It Smells Like Mama!'

Minnelli also says she has no plans to switch up her signature hairstyle, telling PEOPLE, "Are you kidding? Change my hair? Nay!"

Minnelli stays true to her hairdo, as well as to her favorite fragrance, which she says was created by fashion designer Halston. "I wear it all the time. It reminds me of him and our friendship," she says.

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A trademark scent is something Minnelli and Garland have in common; Garland often wore Ma Griffe by Carven, Minnelli recalls.

"I just remember that the last thing Mama always did before she walked out the door was to spray herself with fragrance," Minnelli says.

Garland would also have a rose named after her, and that flower would become the central note in the fragrance she, Luft and cosmetic chemist Vincenzo Spinnato (pictured below) released this month in a limited-edition bottle (above).

Courtesy of Jennifer Daigle: Capturing Heart Photography

RELATED: Liza Minnelli's Life in Photos: From Performing with Mom Judy Garland to Earning an EGOT

"I was most interested in trying to capture overall memories and thoughts of Mama with this fragrance," Minnelli explains.

Minnelli thinks Garland would approve of the finished product: "I believe my mother would be happy, and she would say 'That's it!'"