Is Hilary Duff taking her romance with Matthew Koma to the next level?
The 30-year-old actress, who is pregnant with their first child together, sparked rumors that the two may be engaged on Wednesday when she posted a selfie of herself rocking a ring on that finger.
In the pic, Duff looks as happy as ever, holding her hand to her face while showing off a gold diamond starburst ring from Fox & Bond.
"This vintagey looking sparkly number from @foxandbond has me smiling today," the Younger star captioned the pic.
Interestingly enough, the ring is listed under the "engagement" category on the jewelry brand's official website, retailing for $875.
Fans and friends of Duff's were quick to comment, including her sister, Haylie, who wrote, "Ummm, I thought this was something else."
"Hahah! Me too," added Duff's Younger co-star, Debi Mazar.
ET has reached out to Duff's rep for comment.
Engaged or not, it's certainly been an exciting year for the former Disney star, who announced in June that she and Koma were expecting a baby girl. She also shares 6-year-old son Luca with her ex-husband, Mike Comrie.
Hear more on Duff's second pregnancy in the video below.
Hilary Duff Jokes that Son Luca Is 'On the Fence' About Baby No. 2
Hilary Duff Looks Angelic as She Cradles Her Baby Bump in White Nightie
Hilary Duff Says She and Matthew Koma Will 'Crush It' as Parents Despite ‘Tough Days’