Bombshell! Jessica Simpson cuts quite a figure in her snakeskin jumpsuit as the 39-year-old blonde beauty arrives for an appearance on Jimmy Kimmel Live.

Even more headline-grabbing than her famous curves is her recent admission in her upcoming memoir Open Book, that she and her Dukes of Hazzard co-star Johnny Knoxville "wanted so bad to be with each other" that "... it was like Johnny and I were prison pen-pals, two people who wanted so much to be with each other but were kept apart” by their “respective spouses.” Bam! The two were even rumored to have gone there ... it was reported they had a fling just as Simpson was heading for divorce from then-hubby Nick Lachey in 2005.

Check out her interview by Jimmy last night ...