The "Cool for the Summer" singer got a new tattoo of a rose on the inside of her pointer finger.
She shared her ink on her Instagram stories earlier this week.
The former Disney Channel star got her tat at the Winter Stone tattoo parlor in Los Angeles. The parlor is a popular spot for inking up celebrities like Joe Jonas and Miley Cyrus.
"Obsessed," Demi wrote above the pic of her finger.
The 26-year-old celebrated her big milestone on January 25 and her friends presented her with a colorful confetti-covered cake. She also shared her "6 Months" chip to her followers.