Jessica Simpson is set to tie the knot with fiance Eric Johnson over the July 4th weekend in Santa Barbara.
According to a source, she's been working closely with sister Ashlee Simpson to finalize everything.
"They have been doing lots of wedding stuff together," the source tells E! News.
The source says Jessica is having a "classic and modern" wedding.
"She has been all hands-on for her wedding and her husband...is sitting back and enjoying letting Jessica make a lot of the decisions for their wedding day," the source explains.
"He is a very laid-back guy and just loves seeing Jessica happy, especially on her big day."