In a production experiment on German we investigated the prosodic effects of informativeness (comprising information status and type of focus domain) on sentence-initial referents, or sentence topics. While referents in sentence-final position usually receive the nuclear accent of the utterance, commonly defined as the last and information-structurally crucial pitch accent in an intonation unit, sentence topics often carry a prenuclear accent. However, the status of prenuclear accents is still unclear: Are they just ‘ornamental’ or do they express meaning differences? We expected to find a positive correlation between the informativeness of a sentence topic and its prosodic prominence but the hypothesis was only partly confirmed: Results show that informativeness does not affect the accent type of sentence-initial referents, as they are consistently marked by rising prenuclear accents, even on given items. Nevertheless, results show a subtle influence of information status: The newer the referent the wider the range and the steeper the accentual rise. The parameters intensity and word duration show a main effect of informativeness. Surprisingly, however, contrastive topics are mostly produced as prosodically less prominent, often as part of a flat hat pattern, possibly because the contrast has already been expressed by the parallel syntactic structure. We conclude that prenuclear accents are consistently placed for rhythmic reasons but that they are nevertheless affected by a referent’s information status, however subtle the influence might be. In this respect, prenuclear accents cannot be viewed as being just ‘ornamental’, as they do convey meaning differences.