The 26-year-old also appeared to be trialling a much more pared-down make-up look.
Naturally, the Thank U, Next singer’s fans were quick to praise her make-under.
"GIRL I...," one fan commented with a mind-blown emoji. "Keep your hair this way pls."
Another responded, "oh how i've missed your natural hair... she's growing."
Alfredo Flores, who Ariana frequently works with, also expressed his love for her natural hair. "favorite look on u," he shared. "always."
The dynamic duo, Chloe x Halle, also commented on the pop star's selfie with a bunch of heart-eye emojis. "so beautiful," they wrote.
Even Ariana's mum praised the new look.
"your natural hair/curls is a world of its own...." Joan Grande said on Twitter. "A magnificent beauty you are inside and out/ made up or natural ... I love you..."
The singer has previously opened up about why she chooses to rock hair extensions, explaining that her natural hair was damaged after starring in the teen show Sam & Cat
"Since people give me such a hard time about my hair I thought I'd take the time to explain the whole situation to everybody," Grande explained in a 2014 Facebook post. "I had to bleach my hair and dye it red every other week for the first 4 years of playing Cat... as one would assume, that completely destroyed my hair."
"I wear it in a pony tail because my actual hair is so broken that it looks absolutely ratchet and absurd when I let it down," she continued. "So as annoying as it is for y'all to have to look at the same hair style all the time, it's all that works for now (AND I'm comfortable for the first time in years)...."
She added, "And trust me, it's even more difficult for me to have to wait forever for my natural hair to grow back and to have to wear more fake hair than every drag queen on earth combined. So PLEASE gimme a break about the hair (or just don't look at me lol). IT'S JUST HAIR AFTER ALL. There are way way way more important things. Love y'all very much."