You need a declutter a and shopping trip op!!
This happened to me when I met my husband 6 years ago and I stopped shopping. LIt wasn't a conscious decision either but constantly frustrated by looking dull and frumpy. This year I had a huge over haul sold all my old stuff on vinted and bought new- it was an investment but I feel so good now. It stated in December with two outfits from Asda!
I reckon clothes have around a 5 year life span before the either don't fit due to body shape changes /wear out / or become out of fashion as shapes waistbands and hemlines constantly evolve.
In the summer I wear midi skirts with tops, dresses and culottes. I don't have a specific outfit in mind for each event you specifiy as most of my clothes (I have a small capsule tho wardrobe thanks to minimal mom on you tube) I would wear to all of the above occasions dependant the location, on the weather and what I feel like. I'm intrigued as to the family occasion as a 60th birthday would be different to a Christening.
Yesterday I wore floral culottes and a white vest top top to a bbq. I recently bought a 'nice dress' for slightly more special occasions (posh meal out) but it would have been far too hot to have worn it yesterday.
My favourite outfit at the moment is a ruffle split wrap skirt in a kind of animal print with a fitted black lettuce edged t shirt. I'm size 16 5'6 and 41. I shop in my rubbish town at Tesco Matalan Asda new look primark m and s and next- hm and to maxx if I go to the city. I get Inspo from Facebook groups and Instagram
For summer days when I'm at home I wear denim next boy shorts or some high waisted paper ones.
Oh and love my denim jacket and palmiera sandals and birkies. I add a skinny belt to skirt out fits.
Go and buy a couple of whole outfits (avoid the sale rail) a pair of shoes, belt and coat and you will be half way there! (Budget allowing of course but you don't have to spend a lot)