Suri Cruise is hard at work after legally severing ties with her dad, Tom Cruise. The 20-year-old was spotted on Saturday for the first time since making headlines for changing her name to Suri Noelle. Page Six obtained exclusive photographs of her outside the Trust Arts Education Center in downtown Pittsburgh, Pennsylvania. Suri, notably, starred in two “Midsummer!” shows at the venue’s Peirce Studio alongside her Carnegie Mellon classmates on Friday and Saturday. She dressed casually when seen outside the building over the weekend, pairing a patterned purple tank with white pants and black flats as she chatted with someone. The college…