Having done some competitive rowing as a schoolboy, I believe I can allay any concerns you have that rowers as a group of athletes are grandstanding their assets.
The tightness of their "jumpsuits" is deliberate tailoring. The derrière sits on a sliding seat and is the pivotal point between using the arms and legs. To avoid abrading and losing the smoothness and suppleness, the shorts have to be very, very tight at the rear to prevent friction with the skin. A by product of being purpose designed tight at the rear, the shorts have to be tight and embracing at the front.
It is not a case of if you got it why not flaunt it
In competitive beach surf boats the rowers wear Speedo type swimming costumes and are not afforded the same protection to their rears. The universal solution is for these rowers, both men and women, to give themselves a "wedgy" so their bare cheeks make contact with the seat. It looks an odd sight to the uninitiated.
The Royal Windsors have become nearly notorious for their dalliances over the years (Chuck/Camilla, Randy Andy). Princess Anne is quite a humorous person who speaks her mind. I would suggest she said something to the following effect:
"Oh my, we are big boys, aren't we? Errr ... I mean ..um.. tall."
