Comments of chapter undefined of Pregnant with My Sister's Billionaire Fiance

Here's what I don't understand . Melody's sister has a wealthy fiance who spoils her to some extent - she doesn't lack basics. And it seems like she has a good job as well. Why didn't she buy a few (even if it's just two) good quality outfits for her? I mean, having to wear cheap clothes to work while your sister dates your boss just seems embarrassing.