'No, it wasn't your idea': Bethenny Frankel unloads wrath on Luann de Lesseps over origin of her Skinnygirl brand on RHONY

Bethenny Frankel unloaded on Luann de Lesseps over suggestions she helped create Skinnygirl on Wednesday's episode of The Real Housewives Of New York City.

The Skinnygirl Cocktails founder before that badmouthed Sonja Morgan to the ladies during a festive trip to Dorinda Medley's country home in the Berkshires.

The drama unfolded when Luann told an incredulous Bethenny that she was staying with Sonja in New York.

New nemesis: Bethenny Frankel tangled with Luann de Lesseps during a holiday party on Wednesday's episode of The Real Housewives Of New York City

'That is the craziest s*** I've ever heard,' said Bethenny.

Luann said she felt like Sonja needed her and she was trying to 'mentor' her, which Bethenny could not accept.

'That's really funny, it is like the blind leading the deaf,' laughed Bethenny.

'Really? Is that what you think about me Bethenny?' Luann replied frostily.

Took offense: Luann mentioned how she was Sonja Morgan's mentor and Bethenny found that hilarious

Bethenny then said Luann being Sonja's mentor was like Courtney Love being Luann's mentor before venting her fury on Sonja and her new liquor brand 'Tipsy Girl.'

'I am not remotely worried about the brand of this product. It was the trying to get one over on me with a name that is similar and being cute and using me to get press,' said an annoyed Bethenny.

'You are pretending you have an international lifestyle brand and all these businesses, then you are like you don't know what it sounds like?

Not worried: Bethenny said she wasn't worried about Sonja's brand but was offended she tried to get one over on her

Business woman: Sonja was not invited to the party and Luann tried to stick up for her

'Pick a lane, you are either smart or you are stupid, call it Stupid Girl I would have more respect, or Drunk Girl.'

And Bethenny was not done there.

'Everybody copied me, I was the first person after Diddy to do this, that is the truth, aside from the fact it was your idea,' she bragged while simultaneously baiting Luann.

The first: Bethenny after mocking Sonja talked herself up

Ran with it: Luann reminded Bethenny how they came up with the Skinnygirl name together

'Come on, we had fun with it then you ran with it baby, good for you,' Luann told her hinting at her own involvement in the launch of the hugely successful product.

But Bethenny was not backing down and would give her absolutely no credit.

'No, it was't your idea, that is a joke, but you said it was to everybody' Bethenny shot back.

Took a break: Bethenny took a sip before she retorted while Jules Wainstein stayed way clear of the conflict

'It was you and I toasting about the skinny girl remember?,' Luann started to say.

'No it was my idea that I told you about and you then told everybody else that you thought of,' said Bethenny defiantly.

'We were together,' said Luann defensively.

Holiday fun: Ramona Singer's dog also made a mess in addition to the spat

Conflict free: Jules made it clear that she avoids conflict when she can

'We weren't together when it came up sweetie pie,' replied Bethenny.

'But we were together when you said it,' replied Luann.

Earlier Dorinda had told Sonja over a Central Park walk that she was not invited on the girls trip to her country home.

Park walk: Dorinda Medley took Sonja for a walk around Central Park and then broke the news that she wasn't invited to the girls trip to her country home

'I actually want to talk to you about something, and I need you to understand that it's not a drinking thing. I will not do those conversations with you, we are all adults and we all have our own problems. I do not need to lecture you,' she began.

'But, I was gonna do this whole three day thing in the Berkshires. I'm not doing it now.'

'You're not?' Sonja asked.

That hurts: Sonja sucked it up as Dorinda said she wasn't invited due to her 'vulnerable position' with the group

'No. And you need to let me finish so you understand it as a whole. I feel like right now you're in sort of a vulnerable position and these girls sometimes gang up,' Dorinda continued.

'I don't think right now it's healthy for you to be in a room with all these girls, so basically what I'm gonna do is I'm gonna have the girls come up and then I'm gonna do a dinner with them, and then they're gonna leave the next morning.

'I would love to do a one-on-one with you up there and spend quality time together without a lot of background noise.'

Sonja agreed but griped to the cameras about the situation.

Blown away: The non-invite to the party was confusing and hurtful to Sonja

'I am blown away. Wasn't Ramona the one behaving badly at your party? Why is she invited? Besides the girls love me at parties as I am always the one making out with everyone. Why are you worried about me?,' Sonja complained.

'Those are my friends, it hurts,' she told Dorinda.

'I have got no problem with drinking. The smoking gun here is Bethenny because she is the only one I am on the outs with. So is she more worried about sucking up to Bethenny because it looks like she is choosing sides here?'

Took sides: Bethenny had just went off on Sonja over her Tipsy Girl brand

Luann also brought her new boyfriend, Tom, to a dinner with the girls and partners.

'I only wanted to bring my girlfriends that I know will be supportive and I am not really sure about the others,' Luann told the cameras of her date.

Luann admitted that Tom had once gone out with Ramona and that he still liked her as a friend.

New guy: Luann talked glowing of her new boyfriend Tom

Good stor: Tom told how he was first introduced to Luann by Dorinda

Tom and Luann then recounted how they had been introduced, with Tom saying he had been put on a phone with Luann at a party by Dorinda, and that they had taken it from there.

'Tom is very special to me and I am protecting our relationship,' Luann told the group, which included Dorinda and Jules Wainstein.

Dorinda's boyfriend John also was at the dinner and halted Tom's story about courting Luann with an awkward question. 

Horrible question: Dorinda's boyfriend John interrupted Tom's story and asked a ridiculous question

Say what? Luann and Tom looked incredulously at John after his comment

In the Berkshires, Dorinda told Ramona that Luann was now dating Tom.

'I think it is pretty uncool that Luann knows I dated him and hasn't even mentioned it to me,' Ramona told the cameras as her dog pooped all over Dorinda's house.

'It is prophetic. She has spent the last month treating me like s*** and now her dog is going to treat my house like s***,' Dorinda said.

It's prophetic: Ramona's dog made a mess all over Dorinda's house

Luann told the women that Sonja was upset at being excluded.

'I think it is really s***y that Dorinda did not invite her to the Berkshires. You hurt her feelings. Girlfriends don't do that,' Luann told the cameras.

Dorinda said she stood by her decision and admitted she was seeing some of 'The Countess' in Luann's behavior.

Stood her ground: Dorinda stood by her decision not to invite Sonja

'She does not need to be around alcohol and tension,' said Dorinda.

Ramona chimed in that Sonja 'needs to work on herself.'

To start the show Dorinda had opened up to Bethenny who was hosting a holiday caviar party.

Holiday party: Bethenny hosted a holiday caviar party for her closest friends that featured a caviar server

Caviar server: The gorgeous caviar server reminded Bethenny of Elsa from Frozen and she joked that she should have invited her daughter Bryn to the party

Alcoholic beverages: The holiday party of course included SkinnyGirl cocktails

Fine food: The caviar was flowing at Bethenny's party

'I have never been a fearful person. I just feel overwhelmed because I am always trying to present that everything is fine, everything is good, I can make it better, but sometimes I don't and I think that failure weighs heavy on me,' she said.

Bethenny told her that she needed to spend 'quiet time' alone and deal with her issues.

'I don't want her to be tortured, she is a fragile bird and she is unhappy,' said Bethenny to the cameras supportively.

Getting emotional: Dorinda broke down during a candid conversation with Bethenny

Dorinda then grabbed a seat next to Ramona and the pair tried to deal with Ramona's dislike of John.

'I love you,' Ramona said as she gave her a kiss on the cheek.

'I want to stop all of this,' Dorinda said as Ramona apologized.

Frosty relationship: Ramona and Dorinda were on the outs again after the fiasco at John's business party

Trying hard: Dorinda was on the receiving end of offers of caviar and kisses from Ramona who tried hard to repair their friendship

Dorinda told her that maybe their relationship had changed as they were in different places in their life.

'No, I love you in my life and we are going to figure it out, so f*** you. I am not going anywhere babe,' Ramona told her as they laughed together.

'Ramona knows it is up to Ramona to see if she can repair our friendship. This is a one-sided deal now,' Dorinda told the cameras.

The ladies then did a Secret Santa gift exchange with Bethenny thrilled to get a vibrating thigh-enhancing exercise machine. 

Gift exchange: A thigh-enhancing exercise machine was a big hit during the Secret Santa gift exchange