Blake Lively Channels 'Baywatch' With Sizzling Red Bikini Photos

Blake Lively looks about ready to run down the beach in slow motion.

On August 17, the Gossip Girl alum took to Instagram to share a red-hot update for her latest business venture: A sparkling beverage company called Betty Buzz.

In a new post about the company's grapefruit-flavored offering, Lively, 35, shared three photos of herself posing by a pool in a bright red bikini—one reminiscent of the swimsuits worn on Baywatch. The mother-of-four paired the bikini with a matching red visor, as well as gold hoops and rings. She chose to wear her bright golden locks in pigtails, while also rounding out the look with a vibrant red lip color.

And while the Sisterhood of the Traveling Pants actress dubbed her new beverage "a real crowd pleaser," it was her photo update that fans couldn't get enough of.

See Lively's Latest Photo Here!

"Ryan [Reynolds] is a lucky man," one fan wrote in the comments. Another referenced her popular Serena van der Woodsen character from the aforementioned Gossip Girl, as they noted, "FOREVER THE IT GIRL."

A third couldn't believe how amazing she looked less than a year after welcoming her fourth child, as they added, "You look great after having your last child."

For those who may've missed it, in February, Lively quietly confirmed that she had given birth with a photo that put her postpartum body on display. Not long after the update, husband Reynolds confirmed that both mom and new baby, whose name and sex have not been revealed, were doing well.

"Everybody’s doing great. Everybody’s actually doing fantastic. If we hadn’t figured it out by now, I think we’d be in deep, deep trouble," he said on CNBC’s Power Lunch in February.

Lively and Reynolds, who wed in 2012, are also parents to daughters James, 8, Inez, 6, and Betty, 3.

Next: Blake Lively Shows Off Husband Ryan Reynolds' 'Spicy' Summer Body