Thank you for all some of the replies. I tried the outfit on last night, I was going for casual but not my usual skinnies and black whatever. I felt comfortable in it and quite smart for me. I have not purchased the bag, i've opted for something else I already own, but daren't comment now 😂
For some of the other comments - I don't feel old, I know I am not old, I feel stuck in a rut with my clothing, i'm a bit out of touch with what people are wearing out, I am a bit self conscious of my weight and to be honest do not get out to social occasions often (ever), hence me asking for opinions.
I have 3 DGC, I was initially going to be given the title grandma, it sounded wrong and i pictured my own grandma who always seemed old, so we opted for nana, and I am very active with them. This party is in a wacky warehouse type setting so I know I will be in the ball pool at some point and down the slide. I do not think this is on occasion for sequins or a silky palazzo pants. The pub afterwards is a wetherspoon type establishment and it is a casual occasion just me and DH, hopefully in the beer garden.