Michelle Obama wears $10 T-shirt to lunch with ex First Lady Nancy Reagan

Michelle Obama defied predictions of fashion experts after turning up in a 10-dollar T-shirt and a 25-dollar cardigan for a lunch with Former First Lady Nancy Reagan.

The fashion icon, who has been sporting high-end lines like French designer Azzedine Alaia, wrapped herself in the affordable apparel offered by Gap.

According to Mrs-O.org, a Web site devoted to Obama's style, the First Lady wore a striped T-shirt and a floral cardigan that was matched with a white, bouclé pencil skirt by designer Michael Kors, reports the New York Daily News.

The mum-of-two, who has a line of dreamy-eyed designers waiting to dress her, has continued to add to her admirers with her fashion sense.

The 45-year-old stunned the New York crowd last month after she braved the chilly weather in a purple wool and silk sheath, paired with a jacket from Isaac Mizrahi.

She also made a chic appearance with a classic black sheath by Alaia for a night out on the town with her president-husband Barack Obama.