diff --git a/CHANGELOG.md b/CHANGELOG.md
index bf3ea0a2e1..a0e3b60d89 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@
 * [8953](https://github.com/grafana/loki/pull/8953) **dannykopping**: Querier: block queries by hash.
 * [8851](https://github.com/grafana/loki/pull/8851) **jeschkies**: Introduce limit to require a set of labels for selecting streams.
 
+##### Fixes
+
+* [8971](https://github.com/grafana/loki/pull/8971) **dannykopping**: Stats: fix `Cache.Chunk.BytesSent` statistic and loki_chunk_fetcher_fetched_size_bytes metric with correct chunk size.
+
 ### All Changes
 
 #### Promtail
diff --git a/pkg/storage/chunk/fetcher/fetcher.go b/pkg/storage/chunk/fetcher/fetcher.go
index 0e81554729..5cc8e98916 100644
--- a/pkg/storage/chunk/fetcher/fetcher.go
+++ b/pkg/storage/chunk/fetcher/fetcher.go
@@ -201,9 +201,10 @@ func (c *Fetcher) FetchChunks(ctx context.Context, chunks []chunk.Chunk, keys []
 	// to the cache asynchronously in the background and we lose the context
 	var bytes int
 	for _, c := range fromStorage {
-		bytes += c.Size()
+		size := c.Data.Size()
+		bytes += size
 
-		chunkFetchedSize.WithLabelValues("store").Observe(float64(c.Size()))
+		chunkFetchedSize.WithLabelValues("store").Observe(float64(size))
 	}
 
 	st := stats.FromContext(ctx)