Robert Downey Jr. Reveals His 5 Favorite Instagram Accounts -- Including 'Science Bro' Mark Ruffalo!

by Leanne Aguilera 4:35 PM PDT, October 06, 2015
Photo: Instagram

Happy Birthday, Instagram!

To celebrate the fact that the social media platform is officially five-years-old, some of the biggest insta-celebs are naming their favorite accounts to follow.

ETonline is exclusively revealing the five top Instagram accounts that Marvel mega-actor, Robert Downey Jr., loves to double tap the most.

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1. Beth Stern (@Bethostern)

RDJ's Reasoning: "Sterns and cats."

2. Bow & Arrow (@BowandArrow78)

RDJ's Reasoning: "I'm a sucker for Bruce Lee merch."

3. Banksy (@BanksyNY)

RDJ's Reasoning: "Iconoclast."

West 24th Street

A photo posted by Banksy (@banksyny) on

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4. Mark Ruffalo (@markruffalo)

RDJ's Reasoning: "#ScienceBros."

Good times with @robertdowneyjr. #Avengers: Age of Ultron is on DVD & Blu-Ray. Link in bio.

A photo posted by Mark Ruffalo (@markruffalo) on

5. Robert Downey, Jr.(@robertdowneyjr)

RDJ's Reasoning: "Gotta love yourself."

Happy birthday, America! Now let’s blow the roof off this joint. (Disclaimer: please practice safe fireworking.)

A photo posted by Robert Downey Jr. (@robertdowneyjr) on

What are your favorite accounts to follow on Instagram? Share your thoughts with @ETnow on Twitter!

Is Kylie Jenner wearing buttpads in this Instagram photo? See her response in this video below!