Butt looking bugged on character creation screen

[ItsStupidMatt]

So I just downloaded wicked whims and a couple of mods and animation packs, but as soon as I go to the character creation screen, I can see that the butt of my character looks wrong, the exact same is happening on male and female characters.
I downloaded the mods manually, without using a mod manager.
So I'm looking for help since I have no idea what is causing this.
(I'm new to the sims 4 and modding in general, and this is my first time using Love Labs, so I'm sorry if there's information missing or if I'm doing something wrong.)

[HereComesTheHurricane]

Do you have any sliders? That could be the cause.