Fangirls assemble! In celebration of the release of Marvel’s Avengers: Age of Ultron, Her Universe – the trendsetting geek girl apparel company, and Disney Consumer Products have announced a new fashion line inspired by fan-favorite Super Heroes from the Avengers films. The Marvel by Her Universe collection will be available mid-May exclusively at select Hot Topic stores and hottopic.com, with an online pre-sale starting April 21st. The Avengers-inspired line features designs by winners from the first-ever Her Universe “Geek Couture” Fashion…