Lauren Conrad may not be on The Hills anymore, but that doesn’t mean she compromises her daily dressing! The ex-reality star had a busy day, promoting her new book Sweet Little Lies in New York City. Though the temperature was low, the gorgeous blonde brightened up the afternoon in a colorful shift.

Beyonce brought her Heat to the City as well, launching her fragrance Beyonce Heat at Macys Herald Square. The top Grammy Girl dropped jaws in curve-hugging navy mini.

What heiress melted hearts at The Late Show With David Letterman? Check out the gallery in Style to find out.