HMTQ was on hand in person Saturday for a Windsor get-together called A Gallop Through History -- which is essentially a giant horse and pony show meant to reenact Liz's ascension to the throne ... via onstage performances and feats featuring animals.
Anyway, QE2 seemed pretty thrilled by all the pomp and circumstance ... she was cheesing from her seat watching all the activity down below. The Queen looks great, which is encouraging to see considering her health of late has been a bit touch-and-go.
Like we said, this is one of the bigger events that have been held for her Platinum Jubilee -- which has been going on since February and ends in June. So, yeah ... she's a trooper.