Hillary Clinton attended a Memorial Day parade in upstate New York on Monday wearing yet another over-sized coat and scarf - adding to speculation that she is possibly hiding a back brace.

The 70-year-old has been spotted multiple times of late wearing jackets and scarves that are draped down over her shoulders ever since eagle-eyed social media users spotted a strange protrusion coming out of her back earlier this month.

Her Memorial Day appearance in Chappaqua on Monday was no exception.

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Hillary Clinton attended a Memorial Day parade in upstate New York on Monday wearing yet another over-sized coat and scarf - adding to speculation she is possibly hiding a back brace

Hillary donned a light blue trench coat and a US flag patterned scarf when she marched alongside her husband Bill Clinton and Governor Andrew Cuomo in the mild 60 degree temperatures.

She tweeted a photo of herself standing beside a group of Girls Scouts after the parade and some Twitter users were quick to mention what appeared to be a bulge coming from underneath her jacket.

'Just returned from marching in the annual Chappaqua Memorial Day Parade with everyone from Governors to Girls Scouts. Today we honor those who have made the ultimate sacrifice for their country to keep us safe here at home,' Clinton tweeted.

The Clintons were spotted walking through the streets with Gov Cuomo as they shook hands and chatted with locals during the Memorial Day parade.

Hillary donned a light blue trench coat and a US flag patterned scarf when she marched alongside her husband Bill Clinton and Governor Andrew Cuomo in the mild 60 degree temperatures

The 70-year-old has been spotted multiple times of late wearing jackets and scarves that are draped down over her shoulders

The supposed back brace speculation started early this month when Clinton was photographed coming out of her daughter Chelsea's apartment in New York with a strange protrusion coming from underneath her jacket.

Some on social media were also quick to point out her upright posture and bundled up clothing despite the warmer temperatures in New York.

'(Hillary) looks to be wearing some sort of back brace - weird protrusion and scarf (80 degrees in NYC) up to her chin,' one Twitter user wrote.

'Is Hillary wearing a back brace now? Something was not natural about her posture and bundled up clothing. Weird!' another person tweeted.

Hillary then gave several on stage appearances in New Zealand and Australia the following week as part of a speaking tour where she draped a $1,100 patterned Hermes cashmere blend shawl around her shoulders.

Just last week, the former Democratic presidential candidate took to the stage at Harvard in 84 degree temperatures wearing a long coat and bulky scarf as she accepted the university's Radcliffe Medal for her leadership.

The supposed back brace speculation started early this month when Clinton was photographed coming out of her daughter Chelsea's apartment in New York with a strange protrusion coming from underneath her jacket (above)