Help! What do I wear for exercise as a size 16 with a big tummy?

[BarbaraVineFan]

It's been a really long time since I bought any new sportswear and now I am too fat for what I have :( (these two things may be related, haha!) But I have been asked to participate in a sporting activity at work (I'm a teacher) and need something to wear, but no clue what to get or where from. Criteria as follows:
-not revealing
-will keep me as cool as possible
-as cheap as possible but a decent enough brand that I won't look a mess
-colour doesn't really matter but would prefer nothing neon or too loud
-will be forgiving on a large tum

Ideally I'm thinking sports leggings and a t shirt type thing. Maybe a hoodie for over the top? If anyone could help out, I'd be really grateful. Thank you!

Matalan has decent reasonably priced gym wear. Go for leggings with a loose gym t shirt, wicking fabric should keep you cooler than cotton.
Alternatively if you have a Decathlon nearby they're also good value although sizing is a bit weird but they have changing rooms

Uniqlo big v neck t shirt

Decathlon! Good quality stuff at very sensible prices. Sizing varies but can be a bit on the small side IME.

I'd get some of their Kalenji or Domyos leggings and a cool, baggyish T shirt. Possibly a lightweight hoody for over the top if you'll be outdoors.

what kind of sport?

Primark do good sports wear stuff and it’s pretty cheap. Would running leggings and a looser top be appropriate? I have a tummy too and I think, and I know it’s hard’ not think about your tummy too much and just enjoy the activity.

I wear matalan cropped leggings for my exercise classes (they are size 18). I then wear a sports top which I buy online as I have big boobs (36GG). Matalan and supermarkets all seem to have a range of sportswear now.

Might you need a sports bra too? Mine are from the boobydoo website

Thanks everyone! I have just ordered some lovely looking leggings and a top from Decathlon. So helpful, thanks!