America's sweetheart, Julia Roberts, flashed her million-dollar smile as she did some shopping at Malibu's upscale outdoor shopping area, Cross Creek, on Monday.

The low-key Oscar winner was looking anything but glamorous in her black drawstring waist pants, a black top, light blue blazer and dowdy black clogs. Is it wasn't for that mega-watt mouth of hers -- we aren't sure we'd know she was one of Hollywood's most bankable stars!

The bare-faced beauty, who has three children, seemed to enjoy her afternoon of solo shopping.

Earlier this year, the 46-year-old admitted she isn't all about leading the fabulous life. "I don’t spend a lot of time looking in the mirror," she told UK's The Express. "These days I’m pretty efficient in terms of the time I spend on myself."

Gussied up or dressed down, Julia Roberts will always be one of our faves!