Kat Von D Won't Apologize for Her 'Underage Red' Lipstick: 'It's About Feminine Rebellion'

Breaking Up Is Hard 'Tattoo': 7 Celebs Who Have Removed Their Ex-Themed Ink

They call it “”The: Never get your significant other’s name tattooed anywhere on your body. You never know when things might end, and if they do, you might find yourself scarred for life – literally. (Or maybe not…)

As with all commandments, there are some celebrities who just can’t heed this rule. And they’ve paid the price.

Is This Lipstick Offensive? Sephora Pulls a Kat Von D Shade From Shelves

Deadmau5 and Kat Von D End Engagement

Another engagement comes to an end for Kat Von D.

The tattoo artist turned reality star, 31, revealed that she and fiancé Deadmau5 (real name Joel Zimmerman) have split – but can’t seem to agree on why.

“Man, I’m a fool,” Von D Tweeted Wednesday morning.

She soon addressed what she was alluding when she announced the split on Twitter later that day.

Deadmau5 and Kat Von D Plan an Underwater-Themed Wedding

After Kat Von D and Joel Zimmerman, a.k.a. Deadmau5, became engaged in December, they couldn’t wait to start planning their wedding.

On Aug. 10, the couple will marry in an “underwater-themed” ceremony before 200 friends and family in Los Angeles, the tattoo artist tells PEOPLE.

5 Things You Missed This Weekend: Kelly Clarkson's Engaged, Duchess Kate Is Stepping Back Out & More

It was a weekend overshadowed by tragedy as a nation mourned the 26 lives lost in the Connecticut school shooting.

Yet some happier news emerged from Hollywood and across the pond, amid a string of wedding and royal engagements.

Here’s what you missed:

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Kat Von D Engaged to Deadmau5 – Who Proposed on Twitter!

How, uh, romantic?

Electronic music star Deadmau5 took to Twitter to pose this question of girlfriend Kat Von D: “I can’t wait for Christmas so … Katherine Von Drachenberg, will you marry me?”

Deadmau5, whose real name is Joel Thomas Zimmerman, included a photo of a diamond ring with the disclaimer, “Changing the diamond to black diamond FYI. Sorry for the jpg they’ll finish the actual ring soon I hope.”

Demi Lovato Loves Her New Bird Tattoos, Courtesy of Kat Von D

Demi Lovato has something to Tweet about: her new bird tattoos, courtesy of tattoo artist Kat Von D.

The X Factor judge showed off her ink on Twitter on Monday, a flock of 12 birds that fly up her forearm.

“And another picture of my new birdies,” she Tweeted with a photo of the tiny tats that swarm around the word “Faith.”

Jesse James Cheated with 19 Women: Kat Von D

When she started dating Jesse James, Kat Von D was eager to “prove the world wrong” about him.

Now, she says, she deserves “a big fat ‘I told you so,’ from everyone.”

“Today I encountered the 19th girl to add to the list of people Jesse cheated on me with during this last year,” the former L.A. Ink star wrote Sunday in a blog post on her Facebook page.

Jesse James and Kat Von D Split ... Again

Another month – and another breakup for Jesse James and Kat Von D.

“I am not in a relationship,” the tattoo artist said in a post on her Facebook page on Saturday. “And I apologize for all the ‘back and forth’ if it’s caused any confusion.”

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