A woman with a gigantic baby bump, which was so large that doctors thought she had a secret twin, has given birth to an over 12-pound 15-ounce (5.89 kg) newborn. First-time mom Amber Cumberland, 21, from Aston, Oxfordshire, gave birth to her daughter Emilia on April 16. The little girl is considered to be the second-biggest baby girl ever born in the United Kingdom, following the 2012 record-breaker who was born at 14 pounds 4 ounces (approx. 6.4 kg). Baby Emilia created such a big bump during pregnancy that doctors weren’t sure if there would be a surprise second baby during labor. “Doctors thought it was twins during pregnancy because she was so big, even though we could only see one on the ultrasounds,” Amber said. “We heard it so much we actually started to believe there was another one hiding in there.” During Amber’s pregnancy, she and her partner, Scott …