diff --git a/blob.go b/blob.go
index f7db15e..73e3ab3 100644
--- a/blob.go
+++ b/blob.go
@@ -20,6 +20,10 @@ func (v *Blob) Free() {
 	C.git_object_free(v.ptr)
 }
 
+func (v *Blob) Size() int64 {
+	return int64(C.git_blob_rawsize(v.ptr))
+}
+
 func (v *Blob) Contents() []byte {
 	size := C.int(C.git_blob_rawsize(v.ptr))
 	buffer := unsafe.Pointer(C.git_blob_rawcontent(v.ptr))
diff --git a/repository.go b/repository.go
index bfbd781..4cc8c5d 100644
--- a/repository.go
+++ b/repository.go
@@ -92,6 +92,17 @@ func (v *Repository) LookupCommit(o *Oid) (*Commit, error) {
 	return commit, nil
 }
 
+func (v *Repository) LookupBlob(o *Oid) (*Blob, error) {
+	blob := new(Blob)
+	ecode := C.git_blob_lookup(&blob.ptr, v.ptr, o.toC())
+	if ecode < 0 {
+		return nil, LastError()
+	}
+
+	runtime.SetFinalizer(blob, (*Blob).Free)
+	return blob, nil
+}
+
 func (v *Repository) Walk() (*RevWalk, error) {
 	walk := new(RevWalk)
 	ecode := C.git_revwalk_new(&walk.ptr, v.ptr)