OscarsTop row, from left: Shirley Jones, Van Johnson, Mae West, Rock Hudson, and husband-and-wife dancing team Marge and Gower Champion. Bottom: Janet Leigh, Rhonda Fleming, Bob Hope, and Shirley MacLaine. (Leonard McCombe—TIME & LIFE Pictures/Getty Images)
Click here to see the full collection at LIFE.com
LIFE photographer Leonard McCombe photographed Hollywood legends like Paul Newman, Jimmy Stewart, Zsa Zsa Gabor, Mae West, Kirk Douglas, Burt Lancaster and many more, as they rehearsed for the 1958 Academy Awards. As it turned out, however, only a handful of McCombe’s marvelous photos were published in the magazine. Here, 55 years later, LIFE.com presents the pictures that ran in LIFE, and many more that didn’t.