Should your hips suddenly have a growth spurt/widen at?

the age of 18/19? I've just turned 19, I'm not fat at all, I'm very slim but I can't fit into ANY of my jeans since about 2 weeks ago. Its like I get to my thighs/hips and I really have to pull them up over my hips, and then it is impossible to do the button up! I haven't put on any weight and I can feel it is my hips restricting me doing them up.

Im definitely not pregnant lol. Does this mean my boobs are likely to have a growth spurt too? I'm not fussed if they don't lol I just want to know what to expect. I'm not getting any taller though which is odd. Can anyone relate?
Yes that happened to me its normal
No, how strange!
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Should your hips suddenly have a growth spurt/widen at?
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