Tom Cruise & Helen Mirren On Hand to Celebrate Queens Platinum Jubilee – TMZ

Queen Elizabeth II may not show for every public event these days, but made sure to come out for this one to celebrate 70 years on the throne … as did Tom Cruise and Helen Mirren.

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.

That’s where TC and the Dame herself come in — they were tapped to help do the theater part of this whole thing, and Tom made a splash when he touched down for grand entrance earlier in the day.

Unclear what role exactly he’s playing in the play, but Helen was assigned Queen Elizabeth I … and apparently killed her performance, with a rousing speech that stirred the crowd.

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.

Liz is 96, and while she might not be as out and about as she once was … it’s clear she’ll go the extra mile for a special occasion such as this.