I can't tell from those photos.
You don't need to show your face, but how the dress looks is going to include how it looks below your stomach so you need to show all of it, plus ideally also a shot with you standing sideways.
You could try getting someone else you know to take photos of you in it sitting, standing facing the camera and sideways, not with you intentionally posing, just ordinarily walking about and then you will see what it looks like much better than standing looking in a mirror because the way you took those photos makes me think you are really focusing far more on your stomach than anyone else would.
If you have lost 27lbs, then anything you wear will look nicer on you than it would have before you lost the weight.
If you haven't finished losing weight yet, then in a few more months, this dress may well be too big on you.
Be kind to yourself, you have already done something great for your health so you should feel proud.
People who know you are going to be noticing your slimmer self far more than exactly what you are wearing.
If you like it, enjoy it.
Well done on the weight loss.