Lucy, who has been named lead in the Riverdale spin off TV series Katy Keene, diligently thanked many of them personally. She admitted that while she is known for switching up her hair looks and often, this particular shade was a brave new step.
Her followers wanted to know how she managed to dye her hair so regularly and yet keep it in such lush condition.
Lucy responded by calling her stylist, celebrity fave Kristin Ess, a magician who could do no wrong.
But there's more to her super bouncy, shiny locks than just Kristin.
Lucy posted that she also ensured she booked in for 'constant glosses and trim sessions'.
One friend commented that Lucy changed up her hair colour so often she could no longer recall what her natural hue was.
Lucy wittily responded that her natural hair colour was 'something close to dish water'.
Of course, her natural hair colour is gorgeous - just like the rest of her - although, we can't really remember what it is either?
No matter. We're confident it's heaven just like the rest of her.