"Everyone has to bring in a touch of the Games, don't they?" quipped the designer backstage, referring to the Olympics media frenzy that has taken over her home city of London.
Tweed short dresses were fit for the tennis court as stretchy inserts in ultra-white and blue contoured a silhouette that flared.
Models in tightly pulled, gymnastic buns looked ready to forward flip down the catwalk.
This style worked well with the jackets' athletic shoulders and necklines, accentuated by jacquards with graphic silk.
Softer knitwear provided a halftime break from the sporty look.
A cardigan dress twin-set in soft washed out blue, and a palette of pinky and dusty rose added a feminine touch.
However, in a couple of pieces, the hourglass shape in thick knit made bottoms look overly bulky.
One person who didn't seemed to mind was Stella's father, Paul McCartney, looking on from the side-row.
"It's so beautiful, isn't it?" said the former Beatle, "but I suppose I'm probably biased!"