Tia's new show Family Reunion launched on Netflix July 10.
The comedy series stars veteran television actors including Emmy winner Loretta Devine.
Tamera, 41, wrote a heartfelt post about Tia's new business venture on Instagram.
"My sweet pea. Love you," Tamera wrote. "I’m so proud of you; you warrior mom boss you. Congrats on your @netflix series, #FamilyReunion!"
"Wuuuuuuuuuv you!!!!!!" Tia, 41, responded.
The sisters also posted Instagram dedications for one another when they turned 41 on July 6.
Have you checked out Family Reunion yet? Let us know in the comments section.