It's my birthday coming up. A friend has very kindly bought me a gift card for a clothes shop I like. We're meeting up for tea later on and I'm going to spend the gift card in the shop which is close to the pub we're going to.
The problem is I hate clothes shopping with other people. I like to browse at my leisure. I'm surprised he (It's a male friend, platonic) wants to drag himself around a woman's clothes shop for two hours but alas he does and is actually looking forward to it 
I feel so awkward when people are with me when I'm buying clothes. I feel pressured not to browse for too long and don't enjoy the experience at all. I end up buying stuff I usually wouldn't, or not buying what I actually want.
Help me get out of it without coming across as rude or ungrateful. I do want to use the gift card today as I don't have many opportunities to go shopping (kids and work)
Do I be honest and say I feel awkward and why doesn't he have a few pints and we'll meet back up afterwards?
WWYS?