"Shout out to all of the women, across the world, using their brains, their strength, their work ethic, their talent, their ‘magic' that they were born with, that only they possess," Pink tweeted. "It may not ever bring you as much 'attention' or bank notes as using your body, your sex, your t*ts and a**es, but women like you don't need that kind of 'attention.'"
"In the quiet moments, you will feel something deeper than the fleeting excitement resulting from attention, you will feel something called pride and self-respect," she continued. "Keep on resisting the urge to cave. You'll never have to make silly excuses for yourself."
Needless to say, plenty of people saw the message as Pink throwing shade at Kim Kardashian's controversial nude selfie -- and Amber had no problem calling out the "Just Give Me a Reason" singer.
"Damn Pink, we were all born naked, society sexualizes our breast and bodies," Amber Instagrammed. "If a grown mother of 2 is comfortable with her body and wants to show it off that's none of ur business or anyone else's. ... But please as a grown woman let another grown woman live as she wishes."
"That's our problem! We're so quick to down each other instead of uplifting!" Amber continued.
She also called Pink out for what she sees as being hypocritical.
"Pink, we've seen u damn near naked swinging from a rope (Beautifully) but what's the difference between a rope, a pole and a pic on Instagram? Classism," Amber wrote. "Because u sing while ur half naked does that make it 'Classy' or is it because u have a 'talent?'"
Amber followed up the Instagram with a post featuring a nude photo of Kim, in which she further defended her.
"I don't know u well but I saw u speak about slut shaming and as u know I'm an activist feminist so it spoke to me," Amber wrote. "Being Slut shamed and ridiculed is not fun, it's hurtful and mean. Us women deal with it every day, and I'm happy u can speak openly on this now, because if anyone knows what it's like to be Slut Shamed it's u! Live it Kim! Make a difference and speak on it! Not only when it's convenient for u, but when u can help others."
She also invited Kim and her famous sisters -- despite her very public Twitter spat with Khloe Kardashian last February -- to her "SlutWalk" event in Los Angeles. The event is made to highlight issues of sexual violence, gender inequality, derogatory labeling and victim blaming.
"Let's let the naysayers know u are so much more than a sex tape (13 years ago)," Amber wrote. "F**k it, own it. Ur a mom and a business woman, a wife, sister and daughter. Hope we can make this happen."
"In all seriousness, I never understand why people get so bothered by what other people choose to do with their lives," Kim wrote. "I don't do drugs, I hardly drink, I've never committed a crime -- and yet I'm a bad role model for being proud of my body?"
"I am empowered by my body," she added. "I am empowered by my sexuality. I am empowered by feeling comfortable in my skin. I am empowered by showing the world my flaws and not being afraid of what anyone is going to say about me. And I hope that through this platform I have been given, I can encourage the same empowerment for girls and women all over the world."