Happy Birthday, Justin Bieber! The pop star sensation, who also used to complement his income by being an underwear model (even before Shawn Mendes) is turning 25 today. What a wonderful opportunity to look back at some of his hottest moments, and conduct a close inspection of those famous abs.

Unfortunately, in recent months Bieber wasn’t very generous with shirtless photos on his Instagram page. Plus, his abs are not covered all over in tattoos… Thankfully, however, we still have a lot of beautiful shots from the past.

1. This one was actually a gift from his father

2. With all the tattoos (up to then)

3. “Wowzers”

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Wowzers

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4. Will taking his shirt off make you follow him on Snapchat?

5. No longer a boy!

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No longer a boy, there's a new man in town

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6. Nice view

7. Those world-famous undies!

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Glacier dip in #iceland

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 8. Different undies! (But they’re wet again)

9. Holding on

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#mycalvins

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10. Still sexy when brooding

11. The sun and the Bieber

12. Beach Boy

13. Feeding the Bieber

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The kids gotta eat too

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14. Sporty Spice

15. Remember that whole debate about the size of the… ehm… bulge?

16. Something a bit more recent

17. Happy Birthday!

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Dat ass doe @johnny photo cred

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