"Good Morning America" co-host Robin Roberts, who recently underwent treatment for a rare blood and bone marrow disease, will not return to the show till mid-2013. The show's producers were hoping that the 52-year-old could make a return on the show by February 2013, but that does not seem to be a possibility as her immune system is very weak.

Roberts, who has been on medical leave since September 2012, underwent bone marrow transplant for her disease, known as myelodysplastic syndrome. TMZ reported that the doctors were happy with Roberts' recovery, which is on schedule. However, they also said that she wont be able to return to work for another five to six months.

Thanks to her steady recovery, Roberts has been able to welcome guests home and also make a few important public appearances. On Dec. 10. She welcomed some of her "GMA" colleagues to her house for an early Christmas celebration.

The TV presenter also attended ABC News weatherman Sam Champion's wedding to his partner of three years, Rubem Robierb. The Daily Mail reported that Roberts looked stunning in a red sequined dress and cheered on the newlyweds as they exchanged vows.

Another happy moment for the host was when she welcomed back her beloved pet dog KJ back to her home. Most patients are advised to stay away from their pets for a while during their recovery period as their immune system will be weak.

Roberts was over the moon when she was reunited with Jack Russell Terrier last week and tweeted a picture of both of them and wrote: "Look who made it back for my 100 day celebration...KJ!! We just keep staring at each..can't believe she's finally home."

Ever since Roberts went on leave, she has been communicating with her fans and well wishers via video messages and Twitter.