Flashily
/ˈflæʃɪli/
Definition 1 of 1
Pro Tip 1/3Attention Seeking
Used to describe behavior that wants to be noticed, often in a loud or bold manner. 
He flashily waved his new designer sunglasses at the reunion, craving attention.
Pro Tip 2/3Negative Connotation
Can imply a lack of taste or subtlety and might be used to criticize. 
The critics described the film's style as flashily extravagant and over the top.
Pro Tip 3/3Not Always Positive
Flashily doesn't always mean fashionable; can suggest being flashy without class. 
Despite his wealth, he was known for dressing flashily in mismatched, gaudy outfits.