Good Morning America news anchor Robin Roberts returned to the hit morning show on Wednesday.

Roberts, 52, returned exactly five months after she underwent a bone marrow transplant to treat MDS, a rare blood disorder. Roberts' donor was her older sister Sally-Ann Roberts who is also an anchorwoman. Sally-Ann reports for WWL-TV, a CBS affiliate in New Orleans, La.

Robin could not contain her joy about returning to work when she opened the show this morning at 7am EST on ABC.

"I have been waiting 174 days to say this 'Good Morning America!'" she said.

Robin said sitting back at the desk with her GMA co-anchors George Stephanopoulos, Josh Elliott, Lara Spencer and Sam Champion was surreal.

"I keep pinching myself and I realize that this is real. This is really happening," she said. "Faith, family and friends have brought me to this moment and I am so full of gratitude."

Robin thanked her medical staff, family and fans for their endearing support during her battle for the rare blood disorder she was diagnosed with five years after she successfully beat breast cancer.

"There's so many people that I want to thank throughout the morning, my doctors and nurses and family and colleagues and people who have sat in this chair and those who have blazed the trail before me," Robin said.

Robin took two of her co-anchors, Elliott and Champion, to her hometown of New Orleans to celebrate and attend the Super Bowl at the end of January. Super Bowl 2013 was held at the Mercedes Benz Superdome on Sunday, Feb. 3.

Roberts has several milestones to look forward to in her return. Last week, Stephanopoulos announced that she will appear on the red carpet at this year's Oscars on Sunday, Feb. 10.  She is also scheduled to interview first lady Michelle Obama.

ABC will air a special that followed her recovery on 20/20 on Friday, Feb. 22.

Watch the short video below of Robin Roberts return with GMA co-anchors George Stephanopoulos, Josh Elliott, Lara Spencer and Sam Champion 

Tags: Robin Roberts Good Morning America ABC video