Rob Kardashian seems to be in a bad place at the moment.

The 27 year-old, who has piled on the pounds in recent years, has reportedly not spoken with his older sister Kim, since just before she tied the knot with Kanye West on May 25th in Italy.

According to RadarOnline, Rob is even refusing to return phone calls and texts from 29 year-old Khloe, who he was supposedly very close to.

The sock company owner "has no reason to talk to Kim," a source told the website, adding that "they haven't been on good terms for a very long time."

Reportedly, Kim "hasn't bothered to even attempt to talk to him since returning from her honeymoon, [while] Khloé has sent him text messages and left him several voice mails," another source revealed.

Adding, "Rob hasn't returned any of Khloé's phone calls or texts. He feels completely estranged from his sisters and family. He really isn't in a good place."

The animosity started when Rob decided to not attend Kim's nuptials, but since returning to Los Angeles he has just stayed "in his house, and hasn't been returning calls from concerned family members, an insider said at the time.

Tensions also arose between the siblings when Kim reportedly highlighted her younger brother's dramatic weight gain.

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"Kim and Rob haven't been speaking to each other for months - she thinks he is lazy, and bringing down the family name because of his physical appearance" a source told Radar. "After arriving in Paris, Rob and Kim got into a very heated argument because she thought he was just moping around the hotel."

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Adding, "She encouraged him to go out and sight see, which he declined to do."

One month after the celebrity wedding, Rob still hasn't publically spoke of it nor as he explained his decision to abscond the ceremony.

Khloe and Kim still haven't spoke with Rob since the May 25th wedding