Long dresses for 2nd look

Hi BBB! I've been searching high and low for a dress for my second look. I've decided a mini isn't quite as formal as I'd like to go so I'm looking for a long lace dress possibly backless and form fitting. I can't seem to find anything I love for under $6k 😅 and I've already spent so much on my ceremony dress from Floure that I'm trying to reign it in as I still need to find a welcome party dress.

My wedding dress is 2 pieces so maybe I can just find a skirt to pair with it?? The straps are also removable. I just can't help but want a completely different look that's lace as my fiancé said he really loves lace. Any help is appreciated xx