I am not suggesting that's a good goal or a bad goal.
It's just a goal.
Secondly, this post outlines some general rules. There are exceptions. However if you think you are the exception, you may not be. Exceptions are rare.
If your closet is full of these types of clothes & you want to lose weight, then get out there & change your shopping strategy.
Assuming that taller & slimmer is your goal, all these pieces are not your friend.
SIA calls it fattening fashion.
It was randomly selected at a Sydney TK Maxx. All except the orange is made in Italy & either silk or linen. In theory lovely pieces but maybe not lovely on the body which wants to look slimmer.
1. Stripes
The myth: Only thin women can wear horizontal stripes.
The reality: When you are carrying extra weight, you may not need to avoid horizontal stripes in the area of extra weight. Just make sure they are narrow in width & not highly contrasting.
If you are carrying extra weight all over, then don't highly contrast the horizontal stripe area with the rest of your body.
2. Peasant tops
The myth: Peasant tops look good on women carrying extra weight.
The reality: Yes it may be pretty, but all it does is hide what's underneath. Like a tent. Tent looks are never flattering.
Notice the curved lines, the gathers around the waist/bust area & the general fullness? Tent. Tent. Tent. No. No. No.
Your best bet is fabrics with body which skim not cling your form.
3. Loose flowy dresses
The myth: Not sure what the myth is here.
The reality: The best way for a loose flowy dress to be flattering is to fit at the bust & to flare out below it. Like an A line.
Loose & straight up & down is never flattering if you are carrying extra weight.
4. Big flowers on a loose flowy dress.
The myth: Big women should wear big prints.
The reality: Not if the overall look is a tent.
This dress has raglan sleeves (which are easier to fit & cheaper to make, but make you look more rounded) & a high neckline (not great for a big bust). It also has an up & down cut. An A line which starts under the bust would be mush better.
You can still engage your passion for florals with a more structured garment which skims not clings. No tents please.