Tzitzit: Talit Katan

What is the minimum size garment that is chayav in tzitzit?

Ok, so we should be wearing a Talit Katan that is 24”. If it is less than that size, do you say a berachah when putting it on?

Yes wear size 24.

i believe i remember the rabbi saying that shrinking can be a problem does that mean we should go for 26?

Rabbi said 24.

I remember watching the Rabbi measuring. He would stretch the Beged a little to get the Shiur.

Hello When you saw him measure, was it a model with a round collar or the T-collar with the opening that forms a V shape? Was he measuring from the bottom of hole (or the top of the line) the required shiur, or the entire tallit to make sure it is indeed 2 amot long including the hole?

I was referring to the width. End to end.