- Photo: AP1/WENN1 of 10
- Photo: Don MacCarthy/London Ent/Splash News2 of 10
- Photo: Jesse Grant/WireImage.com3 of 10
- Photo: John Shearer/WireImage.com4 of 10
- Photo: WENN5 of 10
- Photo: Gary Gershoff/WireImage.com6 of 10
- Photo: Jason Merritt/Getty Images North America7 of 10
- Photo: MOE/Fame Pictures8 of 10
- Photo: Alexandra Wyman/WireImage.com9 of 10
More Celeb News
- ABC's 'Revenge' Ups Gretchen Berg, Aaron Harberts to Executive ProducersMSNEntertainment 5/21/2013 5:08:58 PM
- Carole King Hits D.C. for Gershwin Salute MSNEntertainment 5/21/2013 5:03:12 PM
- Zac Efron Will Get Busted With Cocaine in Fox's 'Narc'MSNEntertainment 5/21/2013 5:00:27 PM
- Universal's 'Endless Love' Hitting Theaters on Valentine's DayMSNEntertainment 5/21/2013 4:47:06 PM
- TLC's 'Little Couple' Preview: A Crash Course in Parenting (Exclusive VidMSNEntertainment 5/21/2013 4:21:51 PM
- ABC's 'Revenge' Ups Gretchen Berg, Aaron Harberts to Executive Producers
RELATED: Trend Report: Bridesmaid Dresses
"He surprised her with a quick trip to Cabo [San Lucas] to ask her to marry him," a source tells the magazine.
Jay reportedly popped the question with the help of "a very big diamond," according to GossipCop, which has also confirmed the happy news.
The former "The Hills" and "Laguna Beach" star started dating Jay last fall. Earlier this year, she gushed to People, "I'm in love, and it's been great."
Cavallari's rep has not yet made an official comment.
Related stories on ETonline.com: Season 12's 'Dancing with the Stars' Scoreboard
- Party AnimalsCheck out some of Hollywood's biggest party animals.Watch Video »
- Carrie's ChangesSee how this country cutie has changed her looks over the years.Watch Video »
- Bikini BurnsFrom Kim Kardashian to Jessica Alba, see the worst celeb sunburns.Watch Video »
- Double TroubleFrom the Olsens to the Mowrys, see some of Hollywood's most famous twins.Watch Video »
- Country CutiesCheck out the hottest couples in country music.Watch Video »
- Crazy QuotesCheck out some of Gwyneth Paltrow's craziest quotes.Watch Video »
From Videos of Wonderwall
From MSN Entertainment
From Crowd Ignite