The Age of Adaline actress posed for the camera while enjoying a day by the pool, where she sported an adorable short-sleeved white bikini top with matching bottoms to show off her fit physique. Lively captioned the post, “☀️summer lovin’ …had me a blast,” in reference to the popular “Summer Nights” track from Grease, which was originally sung by late actress, Olivia Newton-John, who passed away earlier this month. In Wednesday’s Instagram post, the Gossip Girl alum also tagged her hubby, Ryan Reynolds, in the post, although it’s unclear if she was giving him photo credit or just bringing his attention to the sizzling snap. Unsurprisingly, Lively’s fans showered her with adoring messages, including the notes: “God d**n 🔥😍,” “QUEEN!!!😍” and “Stunning as always!” Others took to the comments section to wish Lively a happy early birthday, which the Betty Buzz founder has already been celebrating over the past week. In an Instagram post last week, Lively kicked off the birthday festivities early with a trip to Disneyland alongside her sister, Robyn Lively. “Find me a happier place on earth to start my birthday celebrations early. 💖 I’ll wait…” The Shallows star captioned the photos, which featured various snaps of the actress gallivanting around the magical theme park in Anaheim, California. In addition to her upcoming birthday on Thursday, August 25, Lively is also coming up on a big celebration: her 10-year wedding anniversary with Reynolds. The Hollywood couple—who share daughters James, 7, Inez, 5, and Betty, 2—tied the knot on September 9, 2012, marking an entire decade together next month. More News: • TikTok Users Turn to Costco as Their New Fashion Destination • Demi Lovato Speaks Out Against Dating Older Men After Rumored Wilmer Valderrama Diss Track • Heidi Klum Pens Heartfelt Message After Sending Her Daughter Off to College