Even with the stripes, this is a very quick knit on 5.0 mm needles. I sped through the body and did everything according to the pattern ...
... until ... haha, you knew there was an until, right?
I didn't make the sweater as long as the pattern suggested because I like my tops to hit at the widest part of my hips. I find that it's a great way to break up the bulk down there and having the shirt flare out accentuates my waist. It's probably against the rules, just like horizontal stripes, but that doesn't bother me.
(OMG, see how big that armhole looks? I'm trying to ignore how freaky big that hole is. Just keep knitting. Just keep knitting.)
The pattern suggested that you go down a needle size for the bottom ribbing. I thought that would pull in too much and make the cardigan balloon-ish. So I did two test swatches.
My suspicion was correct. 4.0 mm needles made the ribbing way too tight. Both of the swatches are exactly the same number of stitches across and down. The smaller needles also make a shorter row.
I was even tempted to go up a size to do the ribbing so it wouldn't pull at all. But the sweater is cotton, so I figure it'll stretch a little and loosen up. We'll see.
A super-happy consequence of swatching was that I noticed the problem with starting 2x2 ribbing in a new color. It reminded me of a striped ribbing trick
I learned from Color Knitting The Easy Way:
The trick is, if you're knitting stripes and ribbing at the same time, to knit every stitch the first row, then go back to the ribbing on subsequent rows. Ta da! No dashes mucking up your stripey stripes.