Under your belt

Finn: Hello and welcome to The English We Speak. I'm Finn.
Feifei: And I'm Feifei. We're at a very nice party.
Waiter: Champagne?
Feifei: Oh, yes please.
Finn: Oh, this party is full of famous actors, actresses and film directors.
Feifei: Very glamorous. (whispering) Oh look, there's ... what's his name again? And what is he wearing?
Finn: Oh yes. What is he wearing? A bright purple suit ... 
Feifei:And pink leather boots ... !
Finn: Yes! And he's got a few awards under his belt, hasn't he? Very successful ... 
Feifei:Under his belt? How do you know what he's got under his belt? I mean, we can see the purple suit and pink shoes, but ... 
Finn: No, no. If you say someone has something under their belt, it means they have a particular experience already—something that might help them in the future. So, in this case, he has the experience of winning a few awards already.
Feifei:I think we need some examples to make that clearer.
After the new football manager had a few wins under his belt, he felt more confident.
I think Madeleine would be a great leader. She has so much experience under her belt.
Finn: Now we've got some examples under our belt—is it easier to understand?
Feifei:Yes, thanks! Oh Finn, he's coming over—that famous actor.
Famous actor:Hi. I saw you chatting over there and I thought I'd introduce myself. I'm Willy Wards.
Feifei:Lovely to meet you. My friend Finn says you've won lots of awards?
Famous actor:I have. Would you like to see them?
Feifei:Erm ... OK?
Famous actor:I always keep them with me. They're right here ... under my belt.
Finn: Oh I'm sorry, I think we have the wrong guy. Time to go Feifei! Bye!
Famous actor:But I really do keep them under my belt! Do join us again next time for The English We Speak.