Jessica Simpson and her younger sister, Ashlee Simpson, both have very successful singing careers and are known around the world as two of the hottest sisters in Hollywood. Jessica, 26, is known for her lovable (but ditzy) personality and her curvaceous body while little sister, Ashlee,22, is known for her outgoing personality and rocker image. No doubt, both sisters are incredibly gorgeous - but which one is hotter? Well, we performed a test and the results are in. Jessica won the title as hotter sister with 82% of the votes while Ashlee came in a not-so-close second with 18% of the votes.

Let's take a look at what makes each of these beauties so stunningly gorgeous.

Jessica Simpson  

Jessica Simpson has transformed her look a number of times over the past few years. She started out like every pop princess in her cute jeans and lovable tank tops. It wasn't long before Jess fell into the mold of every other Britney Spears wannabe and began looking trashy instead of cute. She began to bare her belly button and wear extremely form-fitting clothes. Fortunately, this phase didn't last long and before we knew it, Jess was growing up and generating her own style, one a little more sophisticated than other pop performers in the industry. Today, Jess' dark hair and casual style suit her to a tee. It's not uncommon to see Jess sporting a pair of nice fitting jeans, a stylish sweater and a designer handbag. Her long, dark locks and natural makeup have made her the product of jealous women all over the world. It's no wonder Jess is a well-known style icon - she deserves it.

Ashlee Simpson

Ashlee, much like her older sis, has transformed her look over the past few years more dramatically than most of the other Hollywood starlets in the industry. Ash went from a hardcore rocker girl to a blonde bombshell with a little plastic surgery and a complete style transformation. Ashlee died her jet-black locks to blonde, just before Jess died her blonde locks to chocolate brown. It's almost as though the two girls switched looks. Regardless, Jess still remains the hotter Simpson sister.