Chrissy Teigen Wears Beautiful (and Big!) New Ring Following Vow Renewal with John Legend

The couple celebrated their 10-year wedding anniversary in Lake Como last month

Chrissy Teigen is rocking some buzzy bling.

Teigen, 37, posted a series of shots on Instagram Thursday that included a video of her enjoying a cookie while seemingly showing off what appears to be a gorgeous new ring on her wedding finger.

In the clip, the mother of four took a bite of a crunchy cookie and flashed an eye-catching mega diamond in the process. The large solitaire stone sits on a simple gold band and sparkles as it catches the light.

Teigen and husband John Legend renewed their vows last month, celebrating their 10-year wedding anniversary in Italy alongside family and friends. As the couple both share a love for fashion, it wouldn't be a surprise if Legend surprised his wife with an engagement ring upgrade at the renewal.

Her post also featured several cute snaps and videos of her kids, including her and Legend’s two infants, Esti Maxine, 10 months, and Wren Alexander, 4 months — as well a sweet video of Teigen doing a paint-by-number piece while her dogs cuddled on the bed with her.

In some other sweet shots, their oldest daughter, Luna, 7, posed with Wren in the garden of their L.A. home, as well as on a tennis court in an adorable red tennis dress, and their older son, Miles, 5, was all smiles as he stared down an exciting dinosaur-themed dinner plate.

Related: John Legend Says His 4 Kids Bring 'a Lot of Joy' and 'Positive Energy' to Their Home (Exclusive)

During the couple’s vow renewal last month — which was held in Lake Como, where they first said “I do” ten years ago — their children played an integral role in the celebrations.

Legend, 44, told PEOPLE that having their kids included was so important to him and Teigen.

"It was just us having a party and a celebration, and they were a part of all of it," he said. "We didn't let our guests bring their kids, but we wanted our kids to be there. It really made a big difference for us."

"The biggest difference we felt between the wedding and the anniversary party was really the presence of our children," he added. "We got pretty emotional just seeing them there."

Related: Chrissy Teigen Shares Funny Videos of Kids from 10th Wedding Anniversary Celebrations: It 'Was a Night'

The celebration was an emotional one in general, the singer said.

"Our speeches had everybody in tears," he admitted. "Chrissy spoke first, and the whole room was just weeping. And then I was able to speak and sing to her."

For the performance, Legend brought his four kids on stage with him to sing along to "It Don't Have to Change," a song off his first album, Get Lifted.

"It's a song that we sing together as a Stephens family, and that was pretty magical," he said.

Related: Chrissy Teigen and John Legend’s Vow Renewal in Italy Was ‘Magical’ Says Source: ‘They Were So Happy’

While Teigen shared that she was initially opposed to a “vow renewal” — “I come from the world of Real Housewives, and a vow renewal is the kiss of death,” she said — she eventually came around to it.

"I was like, 'Let's kiss it. Let's do it,' ” she told PEOPLE after the celebration.

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"It was really special. I just feel so lucky and so blessed and in all the corniest of terms. It was so sweet and amazing," she said, adding that it was “way more emotional than I expected.”

She continued, “I really don't like celebrations, whether it's my birthday or anything. But I do love gratitude and I love thanking the people who have been there for the past 17 years of our relationship. To me, that was everything."

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