Recent HST observations allow accurate photometry of stars down to V~27 in the Large Magellanic Cloud, which corresponds to masses of less than a solar mass. Consequently, for the first time, we can determine a luminosity function for stars in another galaxy which have not evolved substantially over the age of the Universe. This allows us to directly measure the initial mass function of LMC stars, and, armed with this knowledge along with the relative number of bright stars, we can infer a star formation history for the LMC. Initial results are exciting in that they may imply a different star formation history than was inferred from ground-based observations of brighter stars. The luminosity function of LMC field stars suggests that the LMC may not be dominated by young stars, or else that the initial mass function is steeper than it is in the solar neighborhood.