Meanwhile, Lively celebrated Feb. 14 by attending the Michael Kors' New York Fashion Week show and dressing head-to-toe in red.
"If I’m this obnoxious at 30, you can only imagine how EXTRA I was on 'spirit day' at school," Lively captioned her Valentine's Day Instagram pic where she's wearing white heels with red hearts and holding a heart-shaped donut with red frosting.
"I just wanted to do it slow and steady, and so I did. It took me 14 months, but I felt proud, so it's important for moms to know that," Lively shared. "It's also your thing, where you want to like, put on Spanx and be like, 'Look how skinny I look after a baby,' but really, it doesn't matter how many corsets you put on -- I was still a full 61 pounds over my weight."