September 30, 2015 01:30 PM

Dan Steinberg/Invision/AP

Three cheers for Naya Rivera!

The former Glee star has welcomed her first child with her husband, actor Ryan Dorsey, her rep confirms to PEOPLE.

Son Josey Hollis Dorsey arrived at 8:31 a.m. on Thursday, Sept. 17 in Los Angeles, PEOPLE confirms via his birth certificate.

“Thank you for all the well wishes and sweet messages!” Rivera tweeted Thursday.

In February, Rivera, 28, and the former Justified star, 32, let fans in on a secret: She was pregnant!

“Ryan and I feel so blessed and can’t wait to welcome the newest member of our family,” the actress, who originally posted a photo of a bun in the oven on Instagram, later wrote on her website.

After proudly debuting her baby belly while supporting Dorsey at an event, Rivera gave her followers a better look at her bump — in a bikini! “Baby moon,” she captioned the beach snapshot.

“I will never forget the moment Ryan felt the baby kick for the first time. It truly was one of those precious memories I will have forever,” Rivera wrote in her PEOPLE.com blog.

And in August, the mom-to-be was showered with love during a Love You Forever-themed celebration before rejoicing in the arrival of her third trimester.

“When I reached the final leg of my pregnancy, I was ecstatic. I could see the finish line and it felt so good,” Rivera, who designed a neutral nursery for her new addition, wrote in her final blog before welcoming her baby.

“Sure, my back was on fire and I was tipping the scales at numbers I didn’t think I could ever reach, but who cares?! WE’RE ALMOST DONE!”

RELATED: Naya Rivera’s PEOPLE.com Blog Series

— Anya Leon with reporting by Elizabeth Leonard

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