Listen to me and take my advice. I'm 29 and just bought a 2015 Mustang...you don't buy a car and drop that kind of cash to get girls, you do it because you're a car guy and you have some kind of affinity towards that particular car/brand. For me, my family is big on cars and I'm a fan of Mustangs and their heritage...started looking back in 2011 with spec'ing and taking the idea seriously, and waited until now for the 50th anniversary to get this particular car. You also don't grab a car off the lot and compromise, you sit down and order what you want...it doesn't cost you any more to do so.
...I don't own a cool car for any other reason than that it's an extension of me/my personality and interests as a person. I've wanted one since I was a kid and can give you the entire history on Mustangs.
Now here's what you want to know...do I get attention? Yes. Mostly from guys wanting to talk cars, which is what would happen to you too. I'm ok with this and love it, because I'm a car guy and it's a great way to make friends. Whenever I do get a girl's attention, it's usually just stares as I drive by or park, but girls DO NOT approach guys on the spot over a car. Most girls don't really care for cars unless their fathers were car guys and got them into it legit. I have received some compliments, and had a white/pink striped '08 park next to me and leave a note saying "great taste in cars!!!" With a smiley face...but girls don't care about cars.
Fact of the matter, is that with every nick/scrape/dent/etc, that new car comes closer to where your Toyota currently sits. New cars are only fun while they're new, which isn't long, and then they just become an obligation....unless, you have an attachment and a genuine purpose/love for that car like I do with mine.
My suggestion...girls are impressed by clean vehicles, pretty wheels, and a nice paint job. Think long and hard about vehicles, and trade in that appliance of a Toyota on something more fun and unique that won't break the bank. Either keep the Toyota as a daily driver and grab a second vehicle for fun...a little Pontiac Solstice drop top for less than $10k is more stunning/fun/ attention getting than a luxury car...and save that cash you'd be spending on a German vehicle without a purpose(unless you're a BMW guy or look at Porsches as said above), or even ditch the Toyota for an FRS/BRZ at $25k, get a Nissan Z, even look at Jeep Wranglers, etc...just get a fun vehicle for the sake of having fun while driving.
...but don't buy a luxury car for huge amounts of cash expecting it to attract girls, as the reality is that it will eventually be just like your Camry and most girls honestly wouldn't know a Bimmer from an Eclipse and just think the wheels and paint are pretty.