Janet Jackson and her husband Wissam Al Mana welcomed their first child on Tuesday
“How exciting!” La Toya, 60, tweeted on Tuesday. “Jan and Wissam just gave birth to a beautiful baby boy!!! Congratulations!!!”
Janet, 50, gave birth to the little one on Tuesday, her rep exclusively confirmed to PEOPLE, noting that she and her husband Wissam Al Mana are “thrilled” to welcome little Eissa in to the world.
“Janet had a stress-free healthy delivery and is resting comfortably,” the rep said then.
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Jermaine, 62, gushed about the birth in an Instagram post on Tuesday, uploading a photo of a blue baseball with “It’s A Boy!” written in white letters.
“Congratulations to my baby sister Janet and Wissam! @janetjackson #muchlove #bigkiss #mynephew #jermainejackson,” Jermaine captioned the photo.
“Making me a grandfather again !” Joe wrote. “Wishing you all the love and happiness a father could wish a daughter.”
Janet shared a baby bump photo exclusively with PEOPLE in October saying, “We thank God for our blessing.”
In May, Jermaine said that his little sister would be a great mother “because she is very tough, very strict.”
He added: “But I tell her, ‘If you need any parenting skills or baby skills, let me know because I’m the best diaper changer there is on this planet, still to this day.’ ”