Jessica Simpson: Baby pic and weight-loss tips

Jessica Simpson, 33, took to Twitter the other day to share this adorable photo of her six-month-old baby boy, Ace Knute, in a swing. Say it with me: Awwww!

The designer/singer tweeted the pic on Saturday, January 4, with the caption, "My snuggle bug...."

Jessica and her fiancé, former NFL star Eric Johnson, 34, are also parents to 18-month-old daughter Maxwell Drew, and they've begun preparations for their wedding — which is apparently happening at some point this year.

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This explains Jessica's eagerness to get back to her pre-pregnancy weight (in addition to the continued media fat-shaming, which she says is getting old). Jessica says she's been dropping a lot of weight as a Weight Watchers spokesperson and by chasing her "back-to-back" babies around the house — and doing somersaults with Maxwell.

“With both kids I’m running up and down my stairs a million times,” she tells USA Today. “Kids can keep your metabolism going.”

As soon as the doctor gave Jessica the go-ahead after Ace was born in June, she says she "jumped" on the Weight Watchers new Simple Start plan, which is a two-week plan that doesn't involve counting points — you get a grocery list and menu plan with lots of options (including treats!). She's now back on the regular Points Plus program.

Read more: Best celebrity family photos of the holiday>

In addition to "weight watching," Jessica's exercising a ton to help her deal with hormones. "Working out and being active overall makes me a happier person to be around," she shares. "I let out so much more anxiety if I go out and walk and talk to Eric, who is basically my therapist on our walks."

For exercise, she says she does a lot of walking, and works out with celeb trainer Harley Pasternak for 45 minutes, four times a week — "resistance training, lots of lunges and squats . . . bursts of cardio throughout."

Sounds like Jessica's figured out what works for her. It's great when that happens. After finally losing my pregnancy weight (five years later...), I can safely say there's no one-size-fits-all as far as diets go; different ways of eating work for different people — at different times of their lives. That's what I've learned, anyway.

Love! xo Haley-O Celebrity Candy: Follow along as Haley Overland delivers the latest scoop on celebrity families — plus sweet celeb interviews! You can’t have too much of this candy, so check back often.