By Rita Kokshanian
Updated Dec 29, 2014 @ 11:29 am
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Credit: Kourtneykardash/Instagram, sofiavergara/Instagram

Christmas may be over, but that's not going to stop the stars from celebrating! This weekend celebs from all over the country stepped out for birthdays, photo shoots, vacations, and more. Kourtney Kardashian made her first appearance since giving birth to her third child, a son named Reign Aston Disick. The reality starlet glowed alongside sisters Kim and Khloe at mom Kris Jenner's Christmas party. Meanwhile, Sofia Vergara celebrated boyfriend Joe Manganiello's 38th brithday in Hawaii. But they weren't the only ones having fun—take a look at our 10 favorite celebrity Instagrams from the weekend below!

1. Kelly Ripa

2. Alessandra Ambrosio

3. Gwen Stefani

4. Rosie Huntington-Whiteley

5. Sofia Vergara

6. Blake Lively

7. Lea Michele

8. Lena Dunham

9. Chrissy Teigen

10. Kourtney Kardsahian