calves and ankles with greater circumference than normal, bearing similarity to baby elephant legs and young trees, hence jumbo + stems. Often covered by brown woollen socks to inadvertently accentuate mass of lower leg. See also cankles
, but note jumbo stems have different ratio to knees and thighs. Sometimes refered to as Christian legs
From the silhouette I thought it was Jaja Binks, but then realized it was Greta with her jumbo stems.