Lena Dunham isn’t quite famesick yet when it comes to the Met. The “Girls” creator, 39, returned to the Met Gala red carpet on Monday for the first time since 2019, wearing a sparkling sequin Valentino dress lined with dramatic red feathers. The stunning showgirl-inspired design featured a thigh-high slit and high neckline, with feathers reaching all the way to Dunham’s chin. Lena Dunham arrived at the Met Gala in a showgirl-inspired dress. Getty Images The actress wore a red sequinned frock. Lev Radin/Shutterstock The gown was lined with dramatic feathers. Getty Images Dunham wore her hair in an updo and paired the look with scarlet studded heels and minimal jewelry for the “Costume Art” theme , which celebrates the connection between all human body shapes and sizes and fashion through art history. Dunham rocked what appeared to be a pink and red polka dot manicure for fashions’ big night. She also wore an understated makeup glam, letting the red dress do the talking.…