Thirty-three years ago when I was dressing my own toddler, we used to call these bubbles.  Maybe it's because their round chubby bodies resembled fat bubbles.  In summer I would put him in a diaper, a romper and a pair of sandals and proclaim him to be darling! Nowadays and perhaps more accurately, these little onesies are called rompers.  I love that name! Now that I'm knitting for the son of that now grown-up toddler, I'm happy to see these little rompers are back in favor.   When looking for the perfect romper to knit for my grandson, I fell in love with PetiteKnits baby designs and decided Little Brother's Romper would be my first foray into knitted rompers.  It's a quick knit in aran weight yarn that is knit bottom-up and in-the-round. It is sized in newborn to 24 months.  I knit the 12-18 mos. size and used machine washable Rowan All Seasons Cotton.  My new little romper is just scrumptious!