Spring is finally in the air, and this week, all the stars came out to play. Many celebrities shared their warm-weather snaps on Instagram, from Lea Michele 's flower-filled hike to Gisele Bündchen 's paradise vacation and much more. Family was also a big part of social media pics, with Gwyneth Paltrow wishing her son, Moses, a happy birthday ; Jessica Simpson  trying to get her daughter, Maxwell, to stop eating flowers; and Miley Cyrus  having a moment with her sister Noah and her dog Mary Jane.
Keep reading to see the rest of this week's cutest celebrity candids, and be sure to follow POPSUGAR on Instagram , Facebook , and Twitter !
Lea Michele  stopped to smell flowers during her hike.
Source: Instagram user msleamichele 
Selena Gomez  and Kylie Jenner also had some fun with flowers.
Source: Instagram user selenagomez 
While everyone else stopped to smell the roses, Jessica Simpson 's daughter, Maxwell, took a bite of one.
Source: Instagram user jessicasimpson 
Chrissy Teigen and her husband, John Legend , fed each other.
Source: Instagram user chrissyteigen 
Katy Perry  debuted her "slime green" hair for Spring.
Source: Instagram user katyperry 
Hilary Duff  gave her son, Luca, a smooch.
Source: Instagram user hilaryduff 
Gisele Bündchen  enjoyed a beautiful vacation in her bikini.
Source: Instagram user giseleofficial 
Heidi Klum  took a nap on the America's Got Talent table after a long day at work.
Source: Instagram user heidiklum 
Madonna  shared an "up close and personal" shot of Miley Cyrus  performing in Brooklyn.
Source: Instagram user madonna 
Emmy Rossum had fun with the cast of Sesame Street.
Source: Instagram user emmyrossum 
Gwyneth Paltrow  cozied up with her son, Moses, who just turned 8!
Source: Instagram user gwynethpaltrow 
Taylor Swift  showed off her signature surprised face before the ACM Awards.
Source: Instagram user taylorswift 
Lupita Nyong'o snapped an adorable selfie with her Peanuts pals.
Source: Instagram user lupitanyongo 
January Jones  had this encounter with a shark puppet.
Source: Instagram user januaryjones 
Beyoncé let her hair down during a relaxing trip on the water.
Source: Instagram user beyonce 
Elsa Pataky ran around the beach with her daughter, India Rose.
Source: Instagram user elsapatakyconfidential 
Josh Duhamel  toasted to the Internet.
Source: Instagram user joshduhamel 
Selena Gomez  had a fun night out with the Jenner sisters.
Source: Instagram user kyliejenner 
Miley Cyrus  got close to her dog Mary Jane and her sister Noah.
Source: Twitter user mileycyrus 
Alessandra Ambrosio had fun in Sydney.
Source: Instagram user alessandraambrosio