Blake Lively threw a "fake" 27th birthday party Monday, Aug. 25, after she was attacked by bees Sunday while having a fashion shoot for her lifestyle website Preserve.

The "Gossip Girl" alum detailed her terrifying pre-birthday encounter with the swarm of bees in a recent post on her lifestyle website.

"I spent the week leading up to my big day shooting content for Preserve's coming months," Lively started her write-up. "Just yesterday, the final day of the shoot, I felt an electric shock of energy-- was it excitement that I was about to turn another year older? Was it nerves? Why did it feel like agony? I like getting older... I think."

"But this felt terrible," she continued. "Does your butt quite suddenly (and painfully) deflate when you turn 27? Because mine hurt like hell ...then my neck, back, legs and forehead. And oh my hands! They were shriveling. It felt like I was being shot by dozens of tiny invisible darts. I felt like the Wicked Witch, melting, melting, burning, melting."

Then she revealed that she was neither going through a quarter-life crisis nor her butt was rapidly deflating, but in fact, was being attack by a swarm of bees.

"[I'd been] Attacked. All over. Everywhere," she wrote.

While recovering, she threw a "fake" birthday bash for herself.

"I looked for the nearest vanilla cake and decorated it...I then found the basin that I use to make giant hot fudge sundaes in, and instead, I made a flower interpretation of a sundae. I pulled out all my favorite Preserve treats-necklaces, that in my mind, represent candy drops, candles that smell like birthday cake, messy hot fudge, sparkling tassels with complementary lanterns and little votives that remind me of the dolls who marked so many of my earlier years," she wrote.

Lively launched Preserve earlier this year. It is a digital magazine and e-commerce website with hand-made, one-of-a-kind items personally picked by the "Savages" actress, The Wire reported.  

As to why she decided to become a lifestyle entrepreneur, Lively told E! News, "I want to have my own path professionally."

"I'm doing something totally different so now I sort of have two careers going on and it'll be interesting to see how it all pans out," she added. "I think ultimately, I will always be doing both, but one is going to be paying the bills better than the other."