How can I lose inches and gain weight?

Izzy2102
Over the last semester I didn't have a scale in my dorm room, so I measured instead. And I lost a few inches since September I lost:

1 inch on my chest

1 inch on my waist

1 inch on my hips

1 inch around my navel

1 inch underneath my boobs

1.5 inch on my arms

1.5 inch around my bum

0.5 inch around my legs

So a total of 8,5 inch. Yet I gained 3 lbs. I know the obvious answer would be I gained muscle mass but I didn't do any weight lifting. I mostly did Interval cardio, took yoga, pilates, swiss ball and kettlebell classes
How can I lose inches and gain weight?
10 Opinion