This article advances two main claims. First, it argues that [Spec, VP], the base position of the external argument, is right-branching in French. It is shown that some surprising restrictions imposed on the order of complements in stylistic inversion can then be interpreted in terms of an adjacency condition restricting the occurrence of lexical material between the postverbal subject and its Case checker. Second, it asserts that [Spec, IP], the derived subject position, is occupied by a null expletive, pro. The limited distribution of the construction then follows from the licensing conditions governing the null expletive in French. Further, the proposed analysis sketches a possible interpretation of adjacency phenomena and of the notion of expletives within recent developments of generative grammar.