Williams has appeared in a wide variety of television series including The Fresh Prince of Bel-Air, "Hangin' With Mr. Cooper" and Quintuplets. In 2004, she played Lauren in the film Raise Your Voice which reunited her with her former Co-Star Hilary Duff. She was also the youngest person featured in Kevin Aucoin's makeup book "Face Forward" alongside Sharon Stone and Christy Turlington. In 2004, she starred in a pilot for The Disney Channel entitled "Triple Play" starring Zac Efron and then went on to co-star in the Disney Channel series pilot for J.O.N.A.S.

It was announced in 2008 that Williams would be joining the cast of As the World Turns as Jade Taylor, Williams made her debut on ATWT, December 12, 2008 and continued on the show for about a year thereafter. She then went on to guest star on Revenge on ABC, and 90210, and starred in the film, "Teenage Bank Heist" for Lifetime.

Most recently, she appeared in the film Dream Girl, starring Margaret Qualley from HBO's The Leftovers and Meredith Hagner of TBS' Search Party. She is also recurring on the series Foursome starring influencer Logan Paul for Awesomeness TV and Youtube Red. In 2017, she can also be seen as a guest star on the upcoming CBS series based on the film Training Day, starring Bill Paxton. She will play Kelly Price. She will also guest star on Freeform's Baby Daddy as the character Adrienne opposite Tahj Mowry. Additionally she will guest star on Disney's Stuck in the Middle.