Christina Aguilera partied at LAX Nightclub inside Luxor on May 31, 2008. (Photo: chinadaily.com.cn/Agencies)

Christina Aguilera wants more children. The "Dirrty" singer - who has a four-month-old son Max with husband Jordan Bratman - is "absolutely" planning to extend her family in the future because motherhood makes her feel "sexy."

When asked if she wants more babies, Christina replied: "Oh, eventually, yes! Yes, absolutely. Absolutely! "Motherhood comes very naturally to me. I think a whole new confidence comes with being a mother. I feel very confident and very sexy as a mother."

Christina Aguilera and one month old Max. (Photo: chinadaily.com.cn/Agencies)

Christina also revealed the secret behind her post-baby figure was hitting the gym hard. She added to U.S. TV show "Extra": "I do some cardiovascular exercise. I do some weights. I do some boxing too."

The 27-year-old singer recently revealed her breasts swelled to a staggering E-cup when she was expecting Max. She said: "It's kind of hilarious! I've never fit into an E-cup before. I look at my husband and go, 'Guess what size this bra is?' And when I tell him, he's just amazed. We have kept the tags that prove it, to look back for memory's sake!"

(China Daily/Agencies June 4, 2008)