'The "cool girl" shirt that keeps selling out is back. I've bought it in two colours already.'

Every now and then a piece of clothing comes along that you feel like you simply MUST own. 

You can imagine it fitting seamlessly into your wardrobe, it's got a reasonable price point, and it just has that oh-whoops-I tripped-and-added-it-to-my-cart-and-hit-purchase vibe. 

That was me with the Bloom striped long-sleeve top from Aussie brand Lioness that everyone seems to be losing their minds over. 

Watch: Me and my colleague Isabelle Dolphin do a Mamamia Fit Check in our Lioness tops. Post continues below.

It comes in a variety of colourways and has sold out multiple times (I know this because I've had it on my wishlist for months), but it is back in stock (so this is your PSA). 

And yes, I can practically hear you screaming "Stacey, it's literally just a striped top, this is not groundbreaking!" And I agree…but I still bought it in two colourways immediately and am eyeing off a third. 

I think it's because the oversized bell sleeves give it a 'cool-girl' factor and also make you feel like you're a dainty little trinket that fell off a charm bracelet. (I'm a tall girl and my sleeves are usually inches too short, so this feature is KEY in the winter chill). 

And I also received seven (YES I COUNTED) compliments in one morning when I wore the red one to the Mamamia office.

Image: The Iconic.

Lioness range from a size 4 to 18 but the fit is always quite oversized. I am usually a size 16 or 18 but had to size down to a size 14 (XL). 

It's surprisingly versatile and I've worn it with jeans and pointed flats, or with stretchy trousers and bright sneakers on the weekend. 

So if you were wanting a sign to finally add it to your cart, here it is — plus my favourite colourways for your perusal.

Bloom long-sleeved top in wine stripe, $69

Bloom long-sleeved top in navy stripe, currently $55.20 on sale

Image: The Iconic.

Bloom long-sleeved top in muted pastel stripes. $69

Feature: The Iconic.