She got som crazy eyes for her to see that her legs got fatter by 3cm jesus christ ٩( ᐛ )و and no wonder because she kept eating practice cakes 
Well... 3 cm is actually quite a bit... especially in one week. What's more surprising is that she didn't increase... ANYWHERE ELSE...
I mean, 3cm is about an inch, but we're talking about -circumference- here.  A woman's thigh is around 60cm around.  3cm is only like 5% of that.  Which means that the change in RADIUS, which is what you'd be most likely to recognize, is more like 0.5cm.  And she saw it from quite a distance.  That's some pretty hawkeyed thigh-gazing, there.