I got all the shirts in TODAY!! But Petsmarts XS does run smaller than most XS to me....I was going to return them and get SMALLS but I started to stretch some of them and they kinda gave a lil......I only ended up keeping 4 out of the seven

the Hand Over the Treats and Nobody Gets Hurt Tee, Hellooo Ladies (Had to exchange this one for a SMALL because the XS was more like for 1-3 lbs), I'm In Charge, & the Delicious Treats one.