​Paris Hilton has fully fledged baby fever. The socialite and heiress reveals she cannot wait to have kids of her own while celebrating her niece's birthday. ​

She Really Can't Wait

​Hilton is currently engaged to the love of her life and lately has been making no secret of her desire to be a mother sooner rather than later.

She reckons she'd do a great job, but for the moment the heiress is getting some practice in with sister Nicky Hilton Rothschild's kids. ​

​Hilton took to Instagram to wish her eldest, Lily-Grace Victoria, a very happy second birthday and to share what the little girl means to her. ​

​"​Happy Birthday to my beautiful niece Lily-Grace! I am so in love with you my precious little angel! You have brought so much love & happiness into of my life!" gushed the socialite.

The heiress to the Hilton Hotels fortune also noted in the post that she can't wait to have her own little bundle of joy so the two ladies can be BBFs, just like Paris and Nicky.

Hilton got engaged to The Leftovers alum Chris Zylka just a few months ago, so it's only natural the 37-year-old is fantasizing about starting a family with him.

​She even told E! News at the launch of her debut skincare line, ​Paris Hilton Skincare ProD.N.A in Las Vegas, that she can't wait to be a mother. ​

​"​I can't wait to have a baby. I'm gonna be the best mom," Hilton confidently told reporters. ​

Her own mother, Kathy Hilton, as well as brother Barron were there to support Paris for the big event. The heiress previously advised she wants at least two kids, preferably a daughter first because she loved growing up in a big family.

So Much To Do

​Aside from being a businesswoman, Paris is busy planning her upcoming nuptials to Zylka, previously revealing that she wants a Disney princess themed day.

The actor proposed over the New Year's holiday with a 20-carat pear-shaped diamond ring during a romantic ski vacation in Aspen, Colorado. ​Nicky Hilton previously confirmed she'd like Lily-Grace to be a flower girl on their big day.

​Her fiancé seems to be in the same frame of mind when it comes to being parents, as Paris said back in November that the two of them frequently discuss the possibility of having children. ​

​When the time comes, she plans to dress them in her own signature style, with lots of pinks and hearts as well as the requisite unicorns.

​For the time being, though, she's focused on being an aunt, with sister Nicky praising how good of a job she's doing.

​"​Whenever she comes over, she comes bearing sweet gifts, clothing, toys, dolls. So Lily-Grace gets very excited with Auntie Paris walks in the door," noted Nicky. ​

Paris's sister also advised she makes a point of visiting their little family every day when she's visiting New York, where they're currently based.

​Nicky gave birth to her second daughter with husband, James Rothschild, Theodora "Teddy" Marilyn, last December. ​Older sister Lily-Grace meanwhile, just turned 2.