The former Atomic Kitten singer and her husband Vicente `Vinnie` Juan Spiteri welcomed daughters Blake and Nico into the world on 20.01.13 and the pair are smitten with the tiny tots.
Jenny - who already has a five-year-old son, Casper, from a previous relationship - tweeted a picture of the girls` feet and wrote: "Good morning,Our girls are here.....Blake & Nico arrived on Sunday night.They are perfect....tiny but perfect!! (sic)"
Jenny - who announced her pregnancy last August - recently spoke about how Spanish Vinnie loved her pregnancy curves.
Jenny - who lives in Ibiza with Vinnie - said: "It`s Vinnie`s first time as a dad and he can`t wait, but he`s more excited right now about my new lumps and bumps.
"He calls me `jamona`. Apparently, it`s meant to be a compliment and means sexy, curvy woman.
"But the first time he said it I asked him: `Did you just call me a pig or a big piece of ham?` as the words are quite similar in Spanish.
"Let`s just say he`s very happy with my extra pounds!"