My sweater is too big. Is there anything I can do?

I knit a gauge swatch. I followed the pattern (Weekend Warrior from the Yarn Girl’s Guide to Simple Knits) but I guess I am smaller than the pattern’s size small. My sweater is way too huge and boxy, not cute and slim the way it looks in the picture. I wish it were like sewing and I could just ‘take it in’ but somehow I doubt that…
Is there anything I can do besides taking it apart and starting over??
This site tells you how to do just that and it works because I’ve done it :cheering:

:muah: Thank you so so much!! That will work so much faster than re-knitting the whole darn thing. (This particular yarn has already been a scarf, a hat, a poncho, a v-neck sweater…and all were frogged because I was just not satisfied!) Thank you, thank you, thank you!!!

Your welcome :teehee: