04/03/2010 AT 6:15 PM ET
Jessica Alba thinks four would be fantastic.
The actress, who has nearly 2-year-old daughter Honor Marie with husband Cash Warren, spoke about wanting a bigger family on Sunday night’s Extreme Makeover: Home Edition, in which she helps rebuild a home for a Texas foster family of 15.
“If you have the love, and the capacity to love children, you should just adopt. And I plan on doing it, ” says Alba, 28, who most recently appeared in Valentine’s Day.
She adds: “My mom grew up around a huge family, and they always wanted more kids, and I was like, Why don t you just adopt?