@thelewisimmers If I got the right dress then it seems to be working fine in my game. It is BGC and it's not a recolor, it's an original mesh. That CC creator is usually very reliable and she does great work. Here's a screen shot from my CAS room. I also verified it looks fine in live mode. Does this look like the right dress?
If this is the right one, all I can recommend is that you try to download the file again as maybe something glitched when you tried before. The file name should be [stephanine] Lena Dress.package and the file size should be 4.01 MB. Make sure it's a .package file and that it's not compressed in any way and it's placed directly in your Sims 4 Mods folder. If you use sub-folders don't go more than 5 levels deep in your Mods folder or your game won't see it (unless you edit your Resource.cfg file and that is a different topic). That goes for any CC .package file. I only go 2 sub-folders deep in my Mods folder so mine looks like this:
Documents > Electronic Arts > The Sims 4 > Mods > CC > Outfits
Sub-folders are optional but they can be useful in keeping things organized in your Mods folder. Just for reference, if you have any script mods that use .ts4script files they must go no more than 1 level deep.
