"Jupiter Iris French arrived earth side 3.23.21," she shared along with a sweet black-and-white photo of her new bundle of joy's little hand.
The 39-year-old musician echoed his wife's happy news, posting the same pic and caption on his own Instagram account.
Tisdale first announced she was expecting baby No. 1 back in September, sharing two snaps of her growing bump on Instagram. In the first picture, Tisdale and the dad-to-be looked lovingly at her stomach while they stood in their backyard. In the other photo, the blonde beauty — who wore a loose fitting white dress — couldn’t stop smiling at her man.
"This year has obviously been hard," The Masked Dancer panelist captioned a photo of herself with French from their gender reveal party. "For so many. Ups and downs, and an emotional roller coaster. I think this day was by far my favorite day EVER! I cried I was so happy. P.S. for all you people going above and beyond for gender reveal parties. A cake with the color inside is JUST as rewarding as fireworks but SAFER! #SheSoFrench."
Even though Tisdale has been candid about her journey to motherhood, she revealed she was initially skeptical of sharing everything with her fans.
"After I got engaged EVERYONE (and I mean everyone!) asked when I was getting married," she wrote on her Frenshe blog. "Then, once I was married, everyone was asking when I was having kids. To be honest, it just felt invasive. I wasn't ready for that step yet and I wanted to be selfish and have Chris all to myself for a while."
Ultimately, the actress embraced this next chapter with her man and the two celebrated six years of marriage last fall.