Kerry Rhodes: Here's My Hot Fiancee ... And Her Hot Rock

Ex-NFL star Kerry Rhodes is officially showing off ... showing off his super hot fiancee -- "Hall Pass" actress Nicky Whelan -- and her impressive engagement ring on a night out in NYC.

The two -- who announced their future union back in February -- hit up K Rico steakhouse in Manhattan recently where Nicky flashed her bling to the throngs of paps outside.

As for the ring ... it's not quite Russell Wilson territory -- meaning you can't see it from space -- but for a guy who's been out of the league for a couple seasons we gotta say ... not bad.

Congrats!

BTW, if you're wondering ... Nicky was the super hot chick Owen Wilson almost banged in "Hall Pass." Nice work, Mr. Rhodes!