Plus Size Occasion Looks - Black Tie Optional/Formal! I am so over the moon that this rainbow sequin jumpsuit is still available! For reference here I’m wearing the 20 and could size down to the 18, maybe even the 16 but other than it being loose on the top, it’s actually the right kind of roomy so you have a lot of room for preference here! Shoes are Amazon! LTKplussize LTKwedding LTKmidsize