It seems to be an ongoing theme in Hollywood this Halloween, as stars flash back to 90's nostalgia in a big way. Beyonce and her family rocked out as girl rap trio Salt & Peppa, while comedian Kevin Harts wife along with 2 friends delivered perfection as they duplicated "Crazy Sexy Cool" R&B group TLC. Hart portrayed Chilli while her friends were T-Boz and Lisa ?Left Eye? Lopes respectively.