My Sis is much bigger and taller than me. I’m just 5’2” and she’s 5’4”. This means that we differ with clothing, footwear and accessories. It’s like she is a little giant. And I’m sure Ugg footwear will fit her best (size 10-11). By the way, if Sis is bigger than me, the biggest of all is my Bro since he is taller than Sis and fatter too! It’s just so funny that I’m the eldest but I’m the petite (though I’m also fat but not as chubby as my two siblings. He-he-he!