Shein Plus Size US 3X Floral Belted Cut Out Shoulder Long Dress

Shein Plus Size US 3X Floral Belted Cut Out Shoulder Long Dress Im 5 foot 9 inches, 300 lbs and wear size 3X 24/26, 44 DD and this fits me no issues Its says 5X on the tag but it fits like a US 3X = 24 Retail 32$ + Washed, tried on, my adult son said its not my style SH 01