Bethenny Frankel once waged war over Sonja Morgan's Tipsy Girl Prosecco, but the reality star has not only come to embrace the competition — she is happy to show support for it too.

The 46-year-old Skinny Girl founder let bygones be bygones on Thursday as she joined her Real Housewives of New York City castmates at the opening of 53-year-old Sonja's pop-up shop in the Vanessa Noel store.

Bethenny, who has her own line of low-calorie wines and liqueurs, showed her support for Sonja at the event and was even seen carrying around a Champagne flute filled with pink Tipsy Girl wine.

Letting it go: Bethenny Frankel was pictured holding a glass of Tipsy Girl Prosecco while talking to Luann de Lesseps at the opening of Sonja Morgan's pop-up store

Bottoms up! The RHONY star was having an animated conversation with her co-star, who got married just a few weeks ago

Fans of the reality show would find it difficult to forget the moment Bethenny brought Sonja to tears over her involvement with the competing brand of alcohol last season.

Although Sonja claimed she thought Bethenny would be excited for her, the Skinny girl mogul dubbed Tipsy Girl a 'cheater brand' and called her friend a 'fraud'.

News of Sonja's Tipsy Girl prosecco first made headlines in late 2015, and the name reportedly hit too close to home for Bethenny.

Business brawl: Bethenny once feuded with Sonja (pictured) over the launch of the wine because she thought the name was too similar to her Skinny Girl brand

Reality TV drama: Bethenny brought Sonja to tears over Tipsy Girl, calling it a 'cheater brand' during an episode of The Real Housewives of New York City last season

Harsh words: The Skinny Girl mogul said she was insulted that Sonja would create a similar brand and called her a 'fraud'

According to Page Six, Bethenny filed trademark paperwork to own the name when it's spelled out as one word, even though Sonja's business partner Peter Guimaraes had already trademarked the two-word name Tipsy Girl seven months before.

Despite the drama, Bethenny eventually came to the conclusion that she had nothing to worry about.

'The Tipsy Girl scandal is kind of great, because it markets Skinnygirl cocktails and the success of my brand while there's no threat, because there is no Tipsy Girl product. It's kind of like a lay-up for me,' Bethenny told Daily Mail Online in May.

'[Sonja's] used this platform for so many years to create businesses that never come to fruition.'

Loved up: Luann attended the event wearing one of Sonja's original designs, and she later posted a picture with her new husband Tom D'Agostino

Support system: Ramona Singer, 60, arrived at the event with her 22-year-old daughter Avery, who was also wearing a Sonja Morgan original

And while Bethenny ended up being wrong about the launch of the product, she seems to have come to terms with the similar-sounding wines — and friendly competition.

Although she missed out on her castmate Luann de Lesseps's wedding to Tom D'Agostino on New Year's Eve, the two were seen catching up at Sonja's opening.

The Countess, 51, took her support for the socialite one step further by wearing a red jumpsuit from her collection.

Meanwhile, Ramona Singer, 60, arrived at the event with her 22-year-old daughter Avery, who was also wearing a Sonja Morgan original.

Style star: Sonja, 53, can be see posing in front of her designs at her pop-up store opening on Thursday night in New York City

Even the show's newest cast member Tinsley Mortimer was in attendance, happily showing her support for her RHONY co-star's new endeavor.

Sonja launched her eponymous clothing line last year as a way to offer fans the ability to shop pieces that echo her classic yet sexy style.

The collection is made up of investment pieces, so Sonja wanted to stick with classic silhouettes that will last for years to come.

'Everything is seasonless,' she told Daily Mail Online. 'The designs will never go out of style.' Each piece in the line is versatile and can be dressed up or down depending on accessories.

'Nothing in my collection is fake or cheap. If you look at the back of my dresses, there’s always a detail and every piece has a full lining. That’s what I want my design house to be known for.'