She does have a private instagram, but no, sierraboggess25 is not her. That one is a fan either roleplaying or pretending to be her. And I’m not sharing Sierra’s instagram username because it is very private, for her and her friends&family - not for fans.
@sierraboggess: Happy #Tbt my love @normlewis777
ASK SIERRA on twitter
On one hand, I think “yay, she’s working publicly again on Broadway! Woohoo!” On the other hand, I roll my eyes gently and think “… again? Really? Ooooooookay.”
Still love her, however!