11/06/2015 09:09 BST | Updated 11/06/2015 09:59 BST

Lil Bub, The Internet's Favourite Cat, Has A Baby Brother And They're Incredibly Cute

MARK RALSTON via Getty Images
Internet celebrity cat Lil Bub known for her unique appearance is held by owner Mike Bridavsky at the inaugural CatConLa event in Los Angeles, California on June 7, 2015. The two day cat expo for cat people claims to be the first of its kind in North America and showcases everything to do with felines. AFP PHOTO/ MARK RALSTON (Photo credit should read MARK RALSTON/AFP/Getty Images)

Lil Bub, aka Lillian Bubbles, took the internet by a storm a few years ago thanks to her loveable little face and sticky-out tongue.

Her parents have made her into an Instagram sensation, giving Grumpy Cat a serious run for her money.

And now she has a baby brother, it's almost too much cuteness for us to handle.

So this is Lil Bub...

A photo posted by Lil BUB (@iamlilbub) on

And this is Lil Bub's dad...

A photo posted by Lil BUB (@iamlilbub) on

This is Lil Bub's new brother, Rosco...

Quality BUB and bro time.

Posted by Lil Bub on Monday, 8 June 2015

Rosco and Lil Bub get on pretty well, and Lil Bub's settling into the big sister role comfortably...


Posted by Lil Bub on Wednesday, 27 May 2015

A photo posted by Lil BUB (@iamlilbub) on

She's even getting used to heading on trips with the baby in tow...

A perfect example of how excited and active BUB gets on trips. Check out the vertical on BUB!

Posted by Lil Bub on Tuesday, 9 June 2015


Vine Of The Day: Lil Bub Meets Grumpy Cat

Baby Meets His Mum's Twin And Has The Best Reaction Ever

Cats who don't need feminism