Lance Armstrong may not have had the best summer ever, but perhaps this will make up for it: He’s now the proud dad of baby No. 5. Armstrong tweeted the birth of daughter Olivia Marie this morning. She is his second child with girlfriend Anna Hansen, with whom he had a son—conceived the traditional way, to the surprise of many—last year. His first three children, with his ex-wife, were conceived through IVF after the cyclist was diagnosed with testicular cancer.