Dillon Thieneman and the Bears had someone stealing their thunder. Yes, the Bears picking a safety in the first round for the first time in 36 years was a shock to the league when the No. 25 pick was announced. However, Thieneman’s younger sister, Kiera, stole the spotlight when the family was interviewed by ABC in Pittsburgh on Thursday night. Stunning in a long red dress next to her father as he was being interviewed, the pretty blonde appeared to struggle to contain her excitement over the huge moment for her brother. The member of Kappa Kappa Gamma at Purdue captured the attention of many fans, leading to a viral moment on draft night. Dillon, the Oregon product, likely hopes to gain just as much favor over Bears fans upon arriving in Chicago to kick off his rookie season. Kiera Thieneman smiles as her father is interviewed by NBC after her brother Dillon was selected by the Bears in the first round of the NFL draft on Thursday.…