This week in the world of celebrity Instagram, there's been a lot going on.
New mum Blake Lively made her first public appearance since she gave birth, by posting up a snap of her and photographer Mario Testino on a shoot.
Lena Dunham shared the most epic throw back Thursday picture of herself when she was a child, in which she looks remarkably angry.
But perhaps our favourite is Jennifer Lopez's selfie, bringing back Jenny from the block.
Take a look at more of our favourite pictures in the gallery below
Lena Dunham shares an epic throw back Thursday
#tbt hell hath no fury... Thank you to @lilianags for the image
Jessica Alba celebrates Honest's 3rd birthday
"We're 3yrs old! @honest! #holymoly #sohappy #dreamcometrue #pinchme #TheHonestCompany #thehonestlife"
Nicole Richie visits Dubai
"Found some bomb fabrics in the souk #DUBAI @Houseofharlow1960 #inspirationiseverywhere"
Karlie Kloss puckers up to Jourdan Dunn
"Jourlie Reunited!!! S/O to CVS store for the reunion Lol @karliekloss @maybelline #Dreamwonder"
Lily Aldridge, Taylor Swift and Karlie Kloss hang out
"Such a Wonderful weekend surrounded by such Wonderful friends @lilyaldridge @taylorswift"
Taylor Swift goes crazy at her Grammy Museum exhibition
OK, so this one's actually a video, but you have to watch it. You can even watch it with the sound off, it's that good.
"Went to the Grammy Museum in LA to see the exhibit they did on ma life. My behavior was as embarrassing as usual."
Jennifer Lopez brings back Jenny from the block
Kendall Jenner on Cara Delevingne for Love Magazine
"LOVE cover! @caradelevingne @THELOVEMAGAZINE @kegrand"
Victoria Beckham is unimpressed with the New York weather
"This is something to look forward to!"
Kim Kardashian shares sweet picture of little North playing the piano
"Morning piano session"
Poppy Delevingne misses her friend Alexa Chung
"i miss my chung chung chung @chungalexa"
Cara Delevingne posts awesome sign
Lady Gaga and Tony Bennett
Blake Lively is pictured for the first time since giving birth
"The one. The only. @mariotestino" - @blakelively
Diane Kruger loves her cat and Joshua Jackson (don't we all?)