How can I stop being so insecure about my body during sex?

I'm not thick at all or have the biggest booty ever. My boobs their big but not like super big. My ass is small but firm since I just feel like being thick or having big boobs or a big ass is like the "new" thing now I guess😒 my boyfriend loves my body and we have amazing sex like damnnn lol. You know how most not all some females are very insecure about their self like me I wish I can love my body like how my boyfriend does but I just get shy. I've been doing a lot of booty workouts to make my butt more firm and toned. I'm not just asking during sex also just in general.