HT Games
No. The DSi and DS Lite have different dimensions and will not share a fitted case.
| Dimension | DS Lite | DSi |
|---|---|---|
| Width | 133 mm (5.2 in) | 137 mm (5.4 in) |
| Height (Closed) | 73.9 mm (2.9 in) | 74.9 mm (2.95 in) |
| Thickness (Closed) | 21.5 mm (0.85 in) | 18.9 mm (0.74 in) |
| Weight | 218 g (7.7 oz) | 214 g (7.5 oz) |
The DSi is **wider and slightly taller**, though **thinner**. A DS Lite case will be too tight width-wise; a DSi case will be loose on a DS Lite. Buy a case specifically labeled for your model.