Ellen DeGeneres -- Downsizing & Out in Beverly Hills

After selling their old mega-compound to Ryan Seacrest for $49 million, Ellen DeGeneres and Portia de Rossi are really downsizing ... into a cozy $18 million mid-century modern Beverly Hills estate.

In their new "modest" digs, Ellen & Portia will have to find a way to make due with 8,500 square feet featuring 4 bedrooms, 6 baths, a commercial kitchen, several patios and only one rectilinear swimming pool, according to The Real Estalker.

While their new crib is still ridiculously awesome -- the place has a tree in the middle of the living room -- the ladies will be packed in like A-list sardines compared to the 9,200 square foot mansion, 3 guest houses and 2.7 acres they just sold to the "American Idol" host.