Courtney Love explains sexy new makeover

Courtney Love turned heads Sept. 20 in a gorgeous crimson Calvin Klein dress at the NYC premiere of "Wall Street: Money Never Sleeps" and the following day in a slinky silver dress at the New Yorkers For Children gala.

It was a stark contrast from the Hole rocker's usual grunge look.

Photos: Shocking slim-downs

Blogs were abuzz that she underwent a "stem-cell face-lift," which involves taking fat from a person's lower body, processing it and then injecting it into the face to make the person look younger.

Love, 46, slams the rumors, telling UsMagazine.com she is simply taking better care of herself.

Photos: Amazing stars makeovers

First change: She darkened her hair to "look more natural," she tells Us. To stay toned, she says she's been regularly "running and doing anti-gravity yoga."

She credits most of her healthy glow from surrounding herself with the right people.

Photos: Courtney Love and others' wackiest VMA outfits of all time

"I used Tony Robbins' concerto of modeling from people who are good influences on me," she tells Us. "I try to keep the negative people out of my life."

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Most important: "No prescription meds!" says Love, who claims she is drug-free after a long battle that left her nearly suicidal and in rehab several times. (Late last year, she lost medical and financial authority over teen daughter Frances Bean, to late ex Kurt Cobain's mother, Wendy O'Connor, and his younger sister, Kimberly.)

Photos: Courtney Love and other stars' scary bikini moments

These days, Love tells Us she is in better shape and hoping to improve relations with her daughter.

The key?

"I'm in a love thing," she told Us. "Loving myself, foremost — trying anyway — and chanting as always."