The youngest of the Kardashian Klan reveal details about their dramatic family.

The youngest Kardashian sisters appeared on Good Morning America on Tuesday morning where they opened up about their big sister Kim’s “amazing” wedding and confirmed (despite meltdown-y appearances), that their brother, Rob, is “doing really well”.

Kendall, 18, and Kylie, 16, were on the New York morning show to promote their new novel (yes! They wrote a book! This is not a joke!) and when host, Amy Robach asked about Kim’s May 24 wedding in Florence, Italy, Kendall confirmed:

“Honestly, everything was amazing,”

Kylie added: “The whole wedding was just filled with so much love. It was just really amazing to watch that.”

“And to see two people so happy,” said Kendall, really piling on the cheese. “I think that was probably my favourite part.”

The girls also confirmed wearing: “some simple pretty gowns that Kim and Kanye picked out”, to the ceremony.

Of course there was one fairly important Kardashian missing from the wedding. Rob Kardashian, 27, ditched the ceremony as Kim married rapper Kanye West because he apparently felt too self-conscious about his size to appear in photographs.

A source said how Rob’s last minute departure caused rows among the Kardashian family and he was seen booking his flight back to LA in tears

The GMA host asked: “How is your brother, Rob? We heard he didn’t go.”

“He’s doing really well,” Kendall responded evasively.

It’s the latest temper-tantrum from the lad who also recently deleted most of his Twitter account .

Celebrity trainer Gunnar Peterson told TMZ he’s now working with the reality star.

He said Rob is determined to “hit the ground running” with a new fitness regime and wants to work out every day until he feels slim again.

Rob previously lapsed his workouts and visited the gym just a few times before flying out to Europe for the wedding , but is now determined to get into a regular routine.

Gunnar told the website he will show his client “no mercy” and plans to put him through an hour of high-intensity full body exercises, cardio and resistance training every day.

He added: “Rob is locked and loaded.”

It was previously claimed the star – whose over-eating began following his break-up from Rita Ora in 2013 – allegedly got into an argument with Kim over her lavish wedding extravaganza, which he branded “superficial bulls**t”.

Things kicked off between the siblings during a lunch at designer Valentino’s Château de Wideville in Crespières, France, and Rob headed for the airport shortly afterwards.

An insider said: “Rob is not in a good place right now at all and his family should be very worried about him.

“He was embarrassed to go to the wedding in the first place because of his weight gain and to be ridiculed by Kim and basically rejected has put him over the edge.”