For once, Paris Hilton let her younger model boyfriend River Viiperi take center stage ... when he walked in a fashion show in Barcelona on Monday.
The 31-year-old socialite enjoyed the view as her 21-year-old Spanish catwalker strutted his stuff on the runway for the clothing brand Mango.
From the looks of it, their relationship has legs.
Paris Hilton & BF
The Model Relationship
1/30/2013 12:20 AM PST BY Johnny Lopez
Get TMZ Breaking News alerts to your inbox