Well if Jb means Justin Bieber he is 15, born 12th March 1994
If it means Jonas brothers Nick is 16 or 17, Joe is 18 or 19 and Kevin is 22 i think.
Hope this answers your question.
JB (Jonathon Gill) from JLS is 22 years old.22
JB Straubel is 38 years old. He was born on December 20, 1975.
14
Jonathan "JB" Gill (formerly of JLS) is 31 years old (born December 7, 1986).
He was 4 years old
Frankie Jonas is 10 years old.
he is 25!!(sent in 2010)
10
25
25
hahahahaha what the i dontidk tho
Jb+lp= <3