I believe the ad was placed by one of the old time escorts that has recently re-emerged and is advertising herself as "new new new". She does have huge (fake) tits; I don't think the pic in the particular ad you cite is hers though (it's a fake).
I think she's in her late 30s / early 40s.
Check her other ads - search by phone. Her measurements change from ad to ad...
Today she's 34DD-25-34; yesterday she was 36DD-24-35.
That shouldn't be too much cause for alarm (for postings on CL) because a lot of them do it - you'll often see 32DD then 34D then 36C and ages varying by +/-2 (or more) years. It's kind of like what Chrysler & Dodge do in selling cars - they have two models of the same car with different trim and therefore 2 cars...