Synonyms for ‘Fat’ that aren’t Cringeworthy…?

Me (natch!)
On a thread, I was going to talk about some dresses that I have bought recently, and I needed to include something along the lines of ‘I am fat’ to explain why I had chosen them.
I know I should just be able to say it, but I don’t like it.
For reference, I’m a bit along the lines of Kirstie Allsop at her largest.

Not sure why you need a word? Are you going to describe yourself on Tinder?

I was a ‘bonny’ baby (fat)

Thank you Batty, but I’m not strong either , unfortunately

When describing yourself or others ?

I described my GS as Sturdy and had my head bitten off , actually he is more than Chunky , but I’m keeping my mouth shut ?

We don't hear much of the word 'plump' these days, do we.

I have a teeshirt with the words, 'strong, not skinny' immortalised on it. Would those do?