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Ross, who is the son of singer Diana Ross, expressed similar sentiments when announcing the good news on his social media. \"Our son has arrived,\" the 32-year-old penned. \"I'm in heaven!\"

The couple was quickly overwhelmed with congratulatory remarks from famous friends and family members.

The \"Pieces of Me\" singer's sister, Jessica Simpson, made it very clear she intends to cement her status as little Ziggy's favorite aunt. \"Auntie Jess loves you Ziggy Blu! With my entire heart and being I will endlessly be by your side,\" the elder Simpson wrote. \"You are beautifully and perfectly made precious boy.\"

Other warm regards came from \"Younger\" star Hilary Duff, who recently announced she is expecting her third child, writing, \"Congrats guys!! Beautiful baby boy!\" Meanwhile, singer JoJo excitedly expressed, \"What a BLESSING!!!! Congratulations to the angelic addition to your beautiful family all my LOVE!!!\" Zelda Williams sweetly remarked, \"Congrats on your new tiny universe lovebugs! May your hearts be as full as his diapers.\"

Simpson and Ross wed in August 2014. Aside from Ziggy, they are also the parents of their 5-year-old daughter, Jagger Snow.

The \"Shadow\" singer also shares an 11-year-old son, Bronx Mowgli, with ex Pete Wentz.

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