I was excited

About this little dress.  WAS.  I made a size SM because I thought that would be the right size based on what I know about baby clothes.  When I say baby clothes, understand, that means onesies to me.  I know that the sizes are newborn, 0-3 mos, 6-9 mos, etc. I didn't read how the sizes were defined, a mistake I'll never make again.  This is size SM/6 mos.  It's for a shower gift for a baby that will be 6 mos. old in the fall/winter, not in the summer!  So, back to the drawing board to make the XS/0-3 mos.