Chrissy Teigen -- I Want My Hubby John Legend to Get Off on Other Women

"Sports Illustrated" swimsuit model Chrissy Teigen isn't the selfish type -- telling TMZ, she doesn't care if her husband John Legend ogles at other hot women ... in fact, she loves it.

28-year-old Chrissy was out signing copies of the new "SI" swimsuit issue last night when we asked what she'd think if she caught John looking at the other ladies in the magazine.

Not only did Chrissy say she'd be into it ... she tells us, "We're pretty open to that kind of thing."