Jennifer Garner
The newbie to Instagram wished her followers, "Happy Valentine's Day from me and my gal. ❤️❤️ #galentines#bookswithbirdie"
Heidi Klum
The former Victoria's Secret shared a snap of her kids. "My 4 Valentines ❤️❤️❤️❤️ #happyvalentinesday"
Carmelo Anthony & La La
"❤️ MINE FOREVER!!!HAPPY VALENTINES DAY to MY WIFE @lala #STAYMe7O", the NBA star captioned.
Emily VanCamp & Josh Bowman
Vancamp gushed about her fiance, saying, "Happy Valentine's Day to the only human who could make me give a s--t that it's Valentine's Day ❤️❤️"
Amanda Seyfried & Thomas Sadoski
The Mama Mia star kept things simple with a heart emoji for her caption.
Kym Johnson
Beautiful balloons & bump! The Australian mother-to-be is followed by a trail of heart shaped balloons in Santa Monica.
Reese Witherspoon
The blonde bombshell was showered with love in a flowing black dress covered in white hearts.
Blake Lively
The beautiful mom looks striking in red and heart pumps while enjoying the Michael Kors show on Valentine's Day.
Janel Parrish & Christopher Long
The couple looked more in love than ever while celebrating their engagement and Valentine's Day at Beauty & Essex, where guests enjoyed specialty sips by Absolut Elyx Vodka, Avion Silver Tequila, and Perrier Jouet Grand Brut.
Paris Hilton & Kris Jenner
Swanky sweethearts! The reality stars share an embrace at the Rachel Zoe Fall 2018 Presentation in Los Angeles.
Melissa Joan Hart
The actress got our hearts pumping while backstage at the American Heart Association's Go Red For Women Red Dress Collection.