How to sew a bathrobe

You can cut a bathrobe right on the fabric

I borrowed this master class from Elena Kucherova, for which I am very grateful, I have already sewed three such dressing gowns.
1. Fold the fabric in half. The fold of fabric will be the middle of the back.
2. We postpone half of our largest volume from the bend (that you have more breasts or hips) plus an increase in the freedom of fitting centimeters 10-15. Draw a line parallel to the fold. This is the middle of the front. For example, the thigh volume is 110 + 10 = 120. Set aside 60 cm from the fold.
3. Having departed from the upper edge of 1.5 cm (seam allowance), we lay down the length of the front to the waist down along the midline of the front. Draw a waist line.
Extend it by 12-15 centimeters beyond the midline for odor. Put a serif.
4. From the waistline we postpone the height of the side (cm 13−15, depending on height). Let the armhole be larger for convenience. I took 15 cm.
5. The whole width of the pattern is divided in half. To get the width of the shelf, add 2 cm to this number, to get the back, subtract 2 cm.
For example, the drawing is 60 cm. The width of the shelf is 30 + 2 = 32 cm, the backs are 30−2 = 28 cm.
We postpone the width of the front panel from the line of the middle of the front, put a notch on the side height line.
6. On the fold line, we postpone the length of the back to the waist from the waistline. Draw the line of the shoulder back.
7. We draw a neckline neckline. Depth 3-4 cm, width 9-10 cm. All this is laid off along and from the shoulder line of the back.
8. From the neckline we draw a shoulder 3-4 cm longer than our shoulder (let there be comfortable lowered shoulders). Bevel of the shoulder line 3 cm.
9.Draw a line for the armhole of the back. It should start from the shoulder line at a right angle.
10. From the line of the middle of the front we postpone 9-10 cm along the line of the shoulder of the front. This is the width of the neck.
11. Connect the smooth point of the neck width and the serif on the waist line, which we did 12-15 cm from the middle of the front.
The line is slightly rounded, almost straight. And then the cutout on the chest will be very large.
12. From the serif on the waist line, draw a line just down, parallel to the bend.
13. Draw a line of the front shoulder with a bevel of 4 cm.
14. Draw the armhole in front from the shoulder to the notch on the side height line.
The drawing of the dressing gown pattern is ready.
For processing the front we need two strips 10 cm wide and 150 cm long.
You will also need a strip 10 cm wide and 150 cm long for the belt.
I used two rectangles as sleeves.