I think i've actually found the ones she's wearing:
https://en.zalando.de/versace-jeans-couture-straight-leg-jeans-indigo-vei21n00n-k11.html
TBH very surprised she used to rave about levi's 501. I used to follow Grace when she was still into fitness, since she was one of the few fitness influencers who had a similar (same height, short and muscular/stocky legs) body as I. Levis 501 just don't fit right for me: they squish my bum, are way too tight on the legs and gape in the waist. I would assume Grace would have the same issues, if not more, since my waist was nowhere near as small as hers.
Looks like the logo.. spinning seems like the worst choice for TALA - the leggings will rip within 10 minutes on the bike
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*edit: some spelling mistakes