[Measurement check] 34B to 32DD - I look ridiculous with only underwear on?

Hi, I'm new to this subreddit, I hope my formatting is okay (: So, I took my measurements and used the calculator, which (to my shock) gave me 30 E/F or sister size 32 DD/E.

My measurements are (in cm): Loose underbust: 76, snug underbust: 74, tight underbust 71, standing bust 88, leaning bust 93 and lying bust 86.

I already tried on a balconette bra in the size 32 DD (I couldn't find any 30F ones, and I think the band would have been too tight anyway), and it seems to fit well -- no seepage etc.

But the thing is, I think I look rather ridiculous in it... I am of a fairly petite build, and with a cup size this big, it seems like half of my upper body is covered by the bra. Is this normal, or could I have somehow misunderstood the measurements?

Sorry for the long post!