After months of playing down her engagement, Lady Gaga is finally ready to proudly flash a little bling. On Monday, according to “Page Six,” the singer pulled up to the Venice Film Festival ahead of the premiere of Joker: Folie à Deux with her fiancé and a fat diamond in tow. The couple were photographed kissing as they exited their car, and Gaga was seen repeatedly placing her left hand on her chest to showcase her new hardware. Her partner Michael Polansky, for his part...