Posted by babu 12:39pm GMT
Starlets have been tieing up their breezy styles (while showing off a little skin) with a variety of knot tops.
Get the California-cool effect with the Red Sleeveless Tie Front Shirt, $48, topshop.com.
Photos (left to right): Duffy Marie-Arnoult/WireImage; Rob Kim/FilmMagic; Jeffrey Mayer/WireImage
!["How I Met Your Mother"](http://mylt.ltcdn.com/d6/sites/mylifetime.com/files/images/imagecache/carousel_159x119/2011/01/12/HIMYM-159x119.jpg ""How I Met Your Mother"")
