Celebs congratulate 'RHONY' star Jenna Lyons over unconfirmed engagement to photographer Cass Bird

• "RHONY" star Jenna Lyons' recent Instagram post led followers to assume that she got engaged.
• Lyons shared a photo in which she wore what appeared to be an engagement ring while posing with Cass Bird. 
• A source told People magazine that the couple isn't actually engaged.

"Real Housewives of New York" star Jenna Lyons' recent Instagram post sparked speculation that she and her partner, the photographer Cass Bird, got engaged. 

On Saturday, Lyons, the former executive creative director and president of J. Crew, posted a black-and-white photo of herself with Bird on Instagram with the caption: "I'll take the French fries and steak au poivre ????Paris @cassblackbird."

Lyons' left hand, which was resting on Bird's shoulder in the selfie, noticeably included a large gemstone on her fourth finger. And even though Lyons' post didn't overtly indicate that the couple got engaged, celebrities congratulated them in the comments section anyway.

TV personality Andy Cohen wrote, "Mazel Tov!" along with four clapping hands emojis, actor Alyssa Milano said, "Congratulations!" and "Schitt's Creek" star Emily Hampshire wrote: "congratsssss! To you and @cassblackbird and whoever's beautiful severed hand got that gorgeous ???? ????."

Sai De Silva and Erin Lichy, who costar on "RHONY," also expressed their joy in the comments. 

The Bravo star confirmed her relationship with Bird in an interview with The New York Times in June.

Then during an episode of "RHONY" that aired the following month, Lyons said that she didn't plan on talking about her partner because "My life has put me in the public eye for my job and other things I've done. And that is my choice. And someone does not want to be in that with me, then I have to respect that."

Since going public with their romance, Lyons and Bird have posted about each other on their separate Instagram accounts. 

Although Lyons' followers interpreted her selfie with Bird as an engagement announcement, an anonymous source told People magazine that the reality TV star isn't set to wed the photographer. 

"She's not engaged," a source told the publication. "She's had that ring forever, and though it does look like an engagement ring, it's not."

Representatives for Jenna Lyons and Cass Bird didn't immediately respond to Insider's requests for comment.