Sonja Morgan slams Dorinda as 'a total fake' as Vicki Gunvalson raves about her 'amazing' new boyfriend on WWHL

Sonja Morgan denounced Dorinda Medley on Watch What Happens Live on Monday night and called her 'a total fake'.

The host of the show, Andy Cohen, had enquired why the The Real Housewives Of New York City star wasn't talking with her co-star.

'She's totally duplicitous, she lied about everything and she's a total fake, that's why,' huffed Sonja, 52.

Pinch hitter: Sonja Morgan stepped in as a guest on Watch What Happens Live on Monday after Kristin Chenoweth was unable to make it due to illness

Pinch hitter: Sonja Morgan stepped in as a guest on Watch What Happens Live on Monday after Kristin Chenoweth was unable to make it due to illness

'I would have liked her to be a good friend, but that's OK,' she grumbled.

During the last RHONY reunion Sonja had accused Dorinda of doing drugs.

'Everyone knows, so I didn't see what the harm was,' she shrugged.

She also accused Dorinda of drunkenly stumbling into the upmarket Regency Hotel in NYC and attacking a man with her stiletto.

Scheduled guest: Vicki Gunvalson of RHOC also was in the clubhouse

Scheduled guest: Vicki Gunvalson of RHOC also was in the clubhouse

On his toes: Andy Cohen had fun with Vicki and Sonja on the Bravo chat show

On his toes: Andy Cohen had fun with Vicki and Sonja on the Bravo chat show

'You don't go to the Regency and make out with people like Luann's [de Lesseps] finance [Thomas D'Agostino, Jr.] or take your heals off and spike someone in the head…that's not what we do at the Regency,' she said haughtily.

On Luann's marriage, she was certain that it was going to go ahead in December despite his infidelities.

'Come hell or high water… I think she could catch me with Tom and still marry him,' she yelled, before noting that she 'never' would go with Tom again anyway.

Going to happen: Sonja was sure that Luann de Lesseps will get married in December

Going to happen: Sonja was sure that Luann de Lesseps will get married in December

'Because she's my friend… but then Luann goes out with all my boyfriends and that's OK,' she said sarcastically.

Sonja filled in as a guest on the show after Kristin Chenoweth was unable to make it due to illness.

She was joined by The Real Housewives Of Orange County star Vicki Gunvalson, 54.

Getting along: Vicki and Sonja got along just fine and have socialized together

Getting along: Vicki and Sonja got along just fine and have socialized together

The 'O.G. of the O.C' boasted about her new boyfriend Steve Lodge.

'He's like amazing, it's like God gave him. I think my mom sent him down... He's incredible. My tank is full,' she sighed.

Vicki was asked why she didn't defend her friend Kelly Dodd while the RHOC women 'ganged up on her' in Ireland.

Tank full: The OG of the OC boasted about her new boyfriend Steve Lodge

Tank full: The OG of the OC boasted about her new boyfriend Steve Lodge

'I purposefully stayed neutral because I really love Kelly and I was trying to get back into social graces with the other women, so for me it was a good place to say ''you know what I'm out of it'' it has nothing to do with me,' she explained.

Later she stepped in to say that Tamra was being hypocritical by going so ballistic at Kelly.

'She talks about everybody's family, everybody's kids, but the moment you talk about her kids, her husband, she goes crazy,' she decided.

Having fun: Vicki and Sonja reminisced about a past night out together in NYC

Having fun: Vicki and Sonja reminisced about a past night out together in NYC

Out and about: Vicki shared a story about being out with Luann and Rey

Out and about: Vicki shared a story about being out with Luann and Rey

A teaser clip of next week's RHOC revealed another explosive bust up, with Kelly proclaiming that she was 'over' Vicki.

'Vicki, this is the last straw, you've completely abandoned me and I've only ever been a loyal friend to you,' she complained.

Rick Schwartz from the San Diego Zoo was behind the bar. 

Poll results: Viewers sided with Everyone Else over Kelly in the poll

Poll results: Viewers sided with Everyone Else over Kelly in the poll

Behind the bar: Rick Schwartz from the San Diego Zoo was behind the bar with a little skunk

Behind the bar: Rick Schwartz from the San Diego Zoo was behind the bar with a little skunk

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