The 28-year-old actress and mum of son Bodhi has been busy promoting her latest film Teenage Mutant Ninja Turtles and these pictures from her interviews and red carpet appearances have reminded us just how glossy her brunette locks really are.
While long hair can easily look limp and a little er, boring, Megan's found the perfect style - a centre-parting paired with soft curls for added texture and most importantly, a high-shine finish.
Although most of Megan's recent interviews have been focused on her acting career (she revealed to E! News that she's desperate to play a superhero), the Hollywood star has shared a few of her favourite beauty products in the past.
As for her flawless complexion, Megan favours natural products and always keeps her skin hydrated.
"I have to wash my face every 12 hours and then moisturise," she said. "I only take showers as I don't like sitting in bath water. After my shower I moisturise with grapeseed oil from Whole foods. It's a great moisturiser and lighter than olive oil."
Just another reason to invest in oils with beauty benefits.
For more long hair inspiration, see these celebrity looks below: