Absolutely loads, although most of it is gym/outdoor stuff as that's pretty much what I live in outside of work (where I wear a tunic/scrubs). I have a dressing room with 4 double sized wardrobes, shelving, 2 big chests of drawers and a custom built shoe rack but still have overspill, wake cos with coats and shoes. Off the top of my head I'd say...
25+ coats/jackets, most very $$$ outdoor brands but also a couple of denim jackets etc.
6ish mid layer fleece jackets/tops
25ish hoodies/sweatshirts (I collect Patagonia hoodies, I have 14 of them)
15ish merino t-shirts/base layer tops, mostly Icebreaker
10+ hiking/walking trousers/waterproof trousers (inc. 3 pairs of Açai waterproof skinnies)
10+ casual cotton t shirts
20ish casual vests, either cotton or merino
4 casual shirts (denim/checked)
10 pairs of jeans
3 thin smart merino jumpers
2 smart cashmere jumpers
4 merino cardigans
6 or 7 other smart casual jumpers
3 Christmas jumpers 
10ish smart/going out tops of various styles
6ish smart shirts/blouses
2 trouser suits
10ish dresses
6ish skirts
18+ pairs of gym/running leggings, mostly Lululemon, Sweaty Betty and NoBull
8ish pairs of gym/running shorts
25+ gym/running tops
15ish sports bras
2 pairs Sweaty Betty yoga pants
4 pairs nice joggers
Plus ski gear, climbing gear, shooting gear, swimsuits, bikinis, wetsuits etc.
Millions of underwear and socks. Loads of Icebreaker merino and Smartwool. Multiple nice pj sets/pj bottoms (mostly FatFace). 2 fluffy FatFace dressing gowns.
Also millions of warm hats, buffs and gloves of varying warmth levels. Essential in Canada!
5 baseball/trucker style caps.
9 pairs of NoBull gym trainers
3 pairs of Nike Metcons
1 pair Reebok Nanos
5 pairs of Salomon hiking trainers
4 pairs of scrambling/approach shoes
4 pairs of hiking boots
6 pairs of running shoes (2 road, 4 trail)
1 pair Teva hiking sandals
1 pair Birkenstocks
4 pairs Havaianas
1 pair Crocs 
2 pairs Dubarry boots
1 pair Le Chameau wellies
1 pair Muck Boots
2 pairs Converse
2 pairs Adidas Gazelles
1 pair New Balance
1 pair Vejas
1 pair Nike Air Force One
5 pairs flat ankle boots (Blundstone/Clarks/FatFace)
2 pairs flat knee high boots
1 pair heeled ankle boots
2 pairs dressy flat sandals
2 pairs dressy heels (very rarely worn!)
Probably missed some out. I do clear out every so often but my gym/outdoor gear habit is pretty major. DP buys far less than me but doesn't care what I spend, we have a high income and no kids so we can afford it.