To commemorate the release of her new book, Wildflower
, the 40-year-old actress posted the throwback picture on Instagram, writing, "Today I wrote a book. And as I thank and celebrate many women this week, I must say a huge thank you to my mother. As I say in the acknowledgments, 'thank you for my life. I am ever so pleased to be here!' We have had quite a road, but it is paved with gratitude."