Obvious it is too make her seem human and frail in compare to the huge dark penis style monster, with the penis head and ejaculation mouth that penetrate you, and go in and out
But these pants are obviously the smallest they could find and are a distract, but why??
Since English doesn't seem to be your native language, here's your post with some corrections:
Why [did] they put the smallest [panties, underwear, or underpants] ever [on] Ripley in Alien[?]share
[Obviously] it is [to] make her seem human and frail in [comparison] to the huge[,] dark[,] penis[-]style monster, with the penis head and ejaculation mouth that [penetrates] you, and [goes] in and out[.]
But these [panties] are obviously the smallest they could find and are a [distraction], but why??