Holly Madison's fiancé Pasquale Rotella designed her 18-carat engagement ring himself.

The 'Holly Has a Baby' star, who got engaged in Las Vegas on Sunday (23.06.13), hinted that she wasn't surprised when her long-term partner popped the question with an elaborate cushion-cut yellow diamond, surrounded by pink and yellow diamond flowers, because she asked him to design the ring himself with celebrity jeweller Allen Schwartz.

The 33-year-old blonde beauty told People.com: ''My fiancé designed it himself, because I told him that's what would make it most special.

''Because we love owls, there is a hidden owl engraved on the rose gold in between two of the flowers. The band is art nouveau-inspired, to go with the flowers.''

Despite being aware that her boyfriend was going to propose, Holly insisted that it didn't take away from the moment they got engaged.

She explained: ''I couldn't have asked for a more wonderful or magical proposal!''

The former Playboy model - who gave birth to the couple's first child, daughter, Rainbow, in March - previously shared her joy on her blog, writing: ''I got engaged on Sunday! My fiancé was so wonderful in creating such a romantic night! He proposed to me at the top of the Ferris wheel at EDC Las Vegas (the Electric Daisy Carnival).''