It’s called the “Baby Surprise Jacket” because
 
this . . . 
 
turns into this!
Pattern:  Elizabeth Zimmermann’s Baby Surprise Jacket
Yarn:  Indigo Moon Hand-dyed Sport—one 225m skein each Autumn Haze and Silver Birch (used full skein Autumn Haze and half skein Silver Birch)
Needles:  4.25 – 4.5mm 24” Crystal Palace Bamboo Circulars
Notes:  See this web link to understand how colour patterning works in this design; we finished shoulder seams with three-needle bind-off (makes a nice ridge that goes well with garter stitch); we worked only three button holes. 
Pattern sizing:  Change yarns to adjust infant/child sizing, e.g., fingering wt for small, sport for medium (just fits The Girl at 21 months, snugly like a shrug, photo to follow!), worsted for large.  There’s also an adult version!  
This ingenious design is such a happy knit, we’ll be making the larger version for The Girl in Cascade 220. Also on our EZ list: the “Tomten Jacket” (go here to see Brooklyn Tweed’s adult version) and the “February Sweater” (again, Brooklyn Tweed has made a lovely version).
 
        