We both loved the shape of this dress," she wrote. "It felt very '90s Kate Moss—cool, sexy and edgy, yet simple and elegant."
The celebration comes just one week before Julianne gets back to work on Dancing With the Stars. The judge will remain busy critiquing the smooth moves of Paula Deen, Bindi Irwin, Kim Zolciak and other shakers.
As for her upcoming wedding celebration, the blond beauty isn't ready to start planning just yet.
"We're just enjoying our engagement," she told E! News. "I think right now, we're just enjoying that part. We really enjoy our stages. I think we enjoyed the dating stage and being engaged, so I think we like to enjoy each stage."
She added, "When I met him it was kind of like, Yeah, I knew and I think he knew too. We kind of knew it was going to happen.