Someone needs to photoshop those panties out.

おねがいしま～す = Please or Will you Please. More formal than just plain おねがい。 Not sure of the context b/c I don't know this anime/eroge/whatever

GeGeGe no Kitarou is a supernatural/horror manga and anime. The context here seems to be either grocery shopping, if the object in her right hand is a coin purse (gamaguchi), or marketing, if she's handing out packets of tissues to pedestrians (though the shape is a little off). The clothing seems to make sense if she's trying to attract customers' attention.

Ah, gotcha....
I changed the TL to If you Please... as in please take one....

I'm fine with the thong on. It's hotter that way.

A take off The Little Matchgirl?

She's probably just portraying one of the people that hand out tissue packets with advertisements/flyers on them to people on the street.

Alternately as this is clearly japanese might the thong not be a fundoshi?