Hilary Duff Just Got Engaged With 2019's Most Popular Engagement Ring Trend

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(Image credit: Kevin Mazur/Getty Images )

Congrats are in order! Hilary Duff just announced her engagement to singer Matthew Koma. This morning, she shared the news on Instagram by posting a selfie that features a beaming Duff and Koma and a very special ring adorning Duff's left hand. She captioned the photo, "He asked me to be his wife." The two have been dating for several years and brought a daughter, Banks Violet Bair, into the world six months ago.

As for Duff's ring, well, it's an elegant and timeless square-shaped stone that also happens to be one of 2019's most popular engagement ring styles. According to Kathryn Money, VP of Strategy and Merchandising for Brilliant Earth, Duff's ring appears to feature a cushion-cut diamond in a white gold or platinum split shank solitaire setting, and she estimates that the center diamond weighs approximately three to four carats.

Scroll down to see the announcements both Duff and Koma shared on Instagram and shop more timeless engagement ring styles.

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More celebs with cushion-cut engagement rings:

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Shop more cushion-cut engagement rings:

Speaking of newly engaged celebs, see Jennifer Lopez's truly massive ring.

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Anna is an editor on the fashion team atBest Knockoff Luxury Clothing and has been at the company for over five years, having begun her career in the Los Angeles office before relocating to New York, where she's currently based. Having always been passionate about pursuing a career in fashion, she built up her experience interning at the likes of Michael Kors, A.L.C., and College Fashionista before joining the team as a post-graduate assistant editor. Anna has penned a number of interviews withBest Knockoff Luxury Clothing 's cover stars over the years, including A-listers Megan Fox, Issa Rae, and Emma Chamberlain. She's earned a reputation for scouting new and emerging brands from across the globe and championing them to our audience of millions. While fashion is her main wheelhouse, Anna led the launch of WWW Travels last year, a new lifestyle vertical that highlights all things travel through a fashion-person lens. She is passionate about shopping vintage, whether it be at a favorite local outpost or an on-the-road discovery, and has amassed a wardrobe full of unique finds. When she's not writing, you can find her shooting street imagery on her film camera, attempting to learn a fourth or fifth language, or planning her next trip across the globe.