Aguilera announced her engagemnt via twitter on Valentine’s Day
Taco Bell introduces new app for ordering food
Taco Bell takes fast food to the next level
Justin Bieber's mother shows her worry for her troubled teen
Pattie Mallette voices her concern for her only son
Leonardo DiCaprio turned down role in 'Hocus Pocus'
The role of Max Dennison was his, but he eventually passed
Fred Armisen to join 'Late Night with Seth Meyers'
Armisen will serve as the Bandleader for Myers’ new late night show
Jimmy Fallon lines up guests for first week of 'Tonight Show'
Michelle Obama, Justin Timberlake and Lady Gaga will make appearances
‘Keeping Up With the Kardashians’ Recap: 'A Surprise Engagement'
Kim gets too comfortable for comfort
The 'X Factor' winners can't catch a break
None of the winners of the canceled show have hit it big
Top Ten X Factor moments
10 times The X Factor made us do a double-take
This week in Apps: Paper, NBC Winter Olympics and LuckyPennie
These featured apps bring out live results and new social networking ways