Because our love for 5 Seconds of Summer frontman Luke Hemmings always merits celebration, we're honoring him by revisiting some of his cutest Instagram pics through the years. There's selfies galore, hilarious 5SOS shots and, of course, plenty of penguins. Peep the pics below, 5SOS Fam!

There's a reason why Luke's Instagram handle is "luke_is_a_penguin" (hint: he really loves penguins). And here he is posing with his stuffed animal 'Pengey.' Awww.

Vintage Penguin Luke! The rocker was a mere 16 years old here. Sniff!

The only thing cuter than 5 Seconds of Summer is 5 Seconds of Summer (well, Luke and Calum) wearing their own merch.

You play that guitar, Luke. Play it for us all.

He is wearing (and tipping) a top hat. Need we say more?

Peep that pic on the bottom right. There is nothing better.

Glasses Luke = Hot Luke.

5 Seconds of Teenage Mutant Ninja Turtles.

Surprised face + lip ring + classic painting in the background = perfection.

OK, so this one's a video, but we still think it's hilarious none the less.

More From Star 93.9