Janet Jackson proudly showed off her baby bump, marking the first time the 50-year-old star has confirmed herself that she’s expecting, People reports. “We thank God for our blessing,” Jackson told the gossip mag posing for a photo in an all-white ensemble that highlighted her precious bump. The “Dammn Baby” singer announced back in May that she was postponing her “Unbreakable” world tour to focus on family planning with her billionaire husband Wissam Al Mana, 41. “Please, if you could try and understand that it’s important that I do this now,” Jackson said in a video she posted online. “I have to rest up, doctor’s orders. But I have not forgotten about…