Stranger Things star Millie Bobby Brown baffles fans with her switching accents as she showcases her new underwear line<br />Millie Bobby Brown promotes her new intimate collection for, 'Florence by Mills,' on Instagram.<br /><br />Millie Bobby Brown's changing accent while she promoted her new underwear line has left fans stunned.<br /><br />The 20-year-old Netflix star most recently took to Instagram to show off her new intimates collection as apart of her Florence by Mills fashion line. <br /><br />And while the Stranger Things actress put her trim waistline on full display in a pair of boxer shorts and a ultra-cropped T-shirt, viewers were too busy listening to the star's fluid accent. <br /><br />Fans noticed that Millie kept switching between her British and American accents - as they claimed it was due to the amount of time she had spent in the States. <br /><br />After 13 years it's no surprise that brunette beauty - who recently tied the knot with Jake Bongiovi - was losing the tone that was tying her back to her life across the pond, but people on the web still flocked to her account to share their shock.