Demi Lovato is one seriously inked-up chick.

The singer and "X Factor" judge -- who already has 13 tattoos on her body -- got a brand new piece to mark the release of her self-titled fourth album.

"Thanks @BangBang! Album release day!!! #DEMI," she tweeted yesterday along with a photo of the body art.

The shoulder tattoo reads "Now I'm a warrior," referencing lyrics her song "Warrior" from the album.

See more of Demi's tatts and those of other inked-up celebs in the gallery above.

Here are the full lyrics to "Warrior" below:

This is a story that I've never told
I gotta get this off my chest to let it go
I need to take back the light inside you stole
You're a criminal
And you steal like you're a pro

All the pain and the truth
I wear like a battle wound
So ashamed so confused, I was broken and bruised

Now I'm a warrior
Now I've got thicker skin
I'm a warrior
I'm stronger than ive ever been
And my armor, is made of steel, you cant get in
I'm a warrior
And you can never hurt me again

Out of the ashes, I'm burning like a fire
You can save your apologies, you're nothing but a liar
I've got shame, I've got scars
That I'lll never show
I'm a survivor
In more ways than you know


There's a part of me I can't get back
A little girl grew up too fast
All it took was once, I'll never be the same
Now I'm taking back my life today
Nothing left that you can say
Cause you were never gonna take the blame anyway


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