Haven and Hudson have made regular appearances on Kym's Instagram since their arrival three-months-ago.
Kym and partner Robert Herjavec shared the exciting news to Instagram.
'I never thought my heart could feel so full,' Johnson wrote. 'We're so in love with out little angels. Born at 7:44am and 7:45am 4/23/18.'
The 41-year-old Dancing With The Stars veteran didn't reveal the names of their newborns.
Herjavec, 55, already has three children from a previous marriage.
The couple previously revealed to fans that they were expecting a son and daughter during their baby shower that was attended by fellow DWTS pro Cheryl Burke and hosted by pal and RuPaul’s Drag Race judge Carson Kressley.