In this week's Instagram round-up, there was much partying to be done with Sarah Jessica Parker, Jessica Chastain and Diana Ross all celebrating their birthdays.
January Jones was also commemorating a special event - the end of Mad Men. On her Instagram account Betty Draper paid tribute to her co-star, on-screen husband Jon Hamm, with a poignant message.
As usual though, many a celebrity posted up snaps of their younger selves. Blake Lively showed us a picture of herself as a kid and Eva Mendes reminisced about her first red carpet appearance.
See more of our favourite pictures from the week in the gallery below
Sarah Jessica Parker shares adorable snap of her and her son
Who knows what the rest of the day holds...but who could ask for more? X sj
Ps thanks to all @EmpireStateBldg for your hospitality.
Olivia Palermo tries on a lot of shoes (we're jealous)
A little shoe shopping and a color dilemma.... deciding on the Juliana sandal #cantdecide #loveallthecolors @schutzshoes
Poppy Delevingne heads out to the countryside
Don't go down to the woods today
Reese Witherspoon celebrates her four-year anniversary
Four years ago, I married this amazing man from Pittsburgh, PA. He makes me laugh every day. I'm a very lucky lady. ❤ Here's to many more happy celebrations, JT! #HappyAnniversaryHubby
Michelle Dockery on the set of Downton Abbey
Naomi Campbell celebrates Diana Ross' birthday
#HAPPYBIRTHDAY #THEBOSS #DIANAROSS #LOVERESPECTWISHES ❤
Lena Dunham is ill in bed. Get well soon Lena!
Sinus Infection day 7. Is what's happened to my face/soul reversible? Only time will tell...
Kim Kardashian shares a behind-the-scenes snap for Elle France shoot
Jourdan Dunn shows off her enviable bob
Karlie Kloss and her grandma
This very special #tbt is dedicated to the most influential woman in my life, my Gram ❤️ I am grateful for the priceless lessons she shared with me (including teaching me how to read by following recipes and baking together). She instilled strong family values in myself, and my three sisters. There is nothing I treasure more than my memories of my Gram. She was the most elegant, gracious, patient and kind woman that I've ever had the privilege to know. 5 years ago today my gram passed away, but she is forever with me in my heart. ❤️
Katie Holms and Suri put on make-up in the mirror
Jessica Chastain celebrates her birthday
Thank you for your beautiful birthday wishes. I enjoyed reading every comment. You are all truly and unconditionally loved!!! #birthday #love #friendship #happiness
January Jones and Jon Hamm celebrating the final season of Mad Men
Mixed feelings about the last premiere of MadMen..nostalgic, proud, sad, and excited! #wildride
Heidi Klum on a ski lift
Alexa Chung takes a selfie while filming a commercial
My hair for @longchamp was inspired by Diego
Blake Lively shares a sweet snap of her as a kid
Chillin' with my homies... #throwbackthursday #tbt
Regram from @jenmeyerjewelry ...But,but....can I have a Prince come and stay ?! Even if not for ever after...but more if affinity?!
Eva Mendes shares her first red carpet appearance
The debut of my latest @nyandcompany collection has me throwing back to my first red carpet. I did my own hair and make up and that's a $6 dress from Goodwill. I've always loved a cheap find. Viva thrift shops! #tbt