NL50 - KK how is my line?

[litemyfire]

Villan reads - none

how did i play this hand? comments/suggestions would be great. thanks.

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.25/$0.50
10 players
Converter

Stack sizes:
Hero: $48.75
UTG+1: $65.70
UTG+2: $50.55
MP1: $43.85
MP2: $37.25
MP3: $78.70
CO: $131.15
Button: $60.30
SB: $20.25
BB: $18.10

Pre-flop: (10 players) Hero is UTG with K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#cc0000">Hero raises to $2</font>, UTG+1 calls, 8 folds.

Flop: 3[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] ($4.75, 2 players)
<font color="#cc0000">Hero bets $3.5</font>, UTG+1 calls.

Turn: 8[img]/images/graemlins/heart.gif[/img] ($11.75, 2 players)
<font color="#cc0000">Hero bets $10</font>, UTG+1 calls.

River: 4[img]/images/graemlins/heart.gif[/img] ($31.75, 2 players)
Hero checks, <font color="#cc0000">UTG+1 bets $15</font>, Hero calls.

Results:
Final pot: $61.75