London, Dec 4 (IANS) Singer-actress Jessica Simpson says she can’t wait to discover the gender of her unborn baby and for that she will go through a sex determination test.

The 31-year-old, who will give birth to her first child next year, has revealed she and fiance Eric Johnson have agreed to find out the gender of their baby Monday, reports contactmusic.com

‘I’m so excited! We have a couple (of) names picked out, but we’re going to keep that private.I like to plan things out. It’ll be good to know what colours to make the nursery. I’m obsessed with thinking about what it’s going to look like,’ Simpson told UsMagazine.com.