Mariah Riddlesprigger (center) with the “Sincerely, Mariah” Team. Credit: SincerelyMariah.com Mariah Riddlesprigger, the partner of Greek NBA star Giannis Antetokounmpo, just launched a new clothing line named ”Sincerely, Mariah.” The messages of Mariah’s new line are particularly optimistic and try to boost everyone’s self-esteem at a time when depression is on the rise due to […]