I finished the blocks today. This is for my sister who just loves purple. (and I do mean love) I do not have a lot of purple so there are some plums and nearly pinks. I am leaning toward putting a border of about 3 inches. Please overlook the striped sheet that they are pinned on.

What do you think? Yes. No. Less than 3 inches. More than 3 inches.

very nice. I like these colors! Do you still have enough pink to put a narrow border to frame it and then one of the darker color for a larger border of may be 3 inches...
Once you sow the blocks together, you can try to place some fabrics and audition what it would look like

i would make the border a different size than the stripes of the blocks... i.e. if the stripes are 1.5" finished each, then 3" border would look good

I like it the way it is.

I would put a border on it.

I like it just like that! Not all quilts need a border, and to me, this is one of them!

I would add a border to frame the quilt. It is sure to be a happy surprise for your purple loving sister.

No border. Why stop the movement? I think borders are boring... unless you have to make a quilt bigger and can't think of a better way.

(Yes, I'm terribly opinionated on borders. )

Very nice. I would put a border on it if I needed to make it to a specific size.
Or I might just put a binding on it with one of the purples in the quilt.
It will look Great either way.